Developments in atomic structure calculations

Note on an Approximation Treatment for Many-Electron Systems

1934 • 13,955 citations

Effects of Configuration Interaction on Intensities and Phase Shifts

1961 • 10,623 citations

Über die Zuordnung von Wellenfunktionen und Eigenwerten zu den Einzelnen Elektronen Eines Atoms

1934 • 6,923 citations

Roothaan-Hartree-Fock atomic wavefunctions

1974 • 5,462 citations

New Developments in Molecular Orbital Theory

1951 • 5,347 citations

A Simplification of the Hartree-Fock Method

1951 • 4,355 citations

Quantum Theory of Many-Particle Systems. I. Physical Interpretations by Means of Density Matrices, Natural Spin-Orbitals, and Convergence Problems in the Method of Configurational Interaction

1955 • 3,424 citations

Unified theory of nuclear reactions

1958 • 2,830 citations

A unified theory of nuclear reactions. II

1962 • 2,768 citations

Self-Consistent Field Theory for Open Shells of Electronic Systems

1960 • 1,927 citations

Quantisierung als Eigenwertproblem

1926 • 1,919 citations

N�herungsmethode zur L�sung des quantenmechanischen Mehrk�rperproblems

1930 • 1,701 citations

Neue Berechnung der Energie des Heliums im Grundzustande, sowie des tiefsten Terms von Ortho-Helium

1929 • 1,578 citations

Ab Initio Computations in Atoms and Molecules

1965 • 1,526 citations

The Wave Mechanics of an Atom with a Non-Coulomb Central Field. Part I. Theory and Methods

1928 • 1,512 citations

LXXIX. The scattering of α and β particles by matter and the structure of the atom

1911 • 1,258 citations

Derivation of the Brueckner many-body theory

1957 • 1,242 citations

The calculation of the absolute strengths of spectral lines

1949 • 1,238 citations

I. On the constitution of atoms and molecules

1913 • 1,222 citations

Theory of Complex Spectra. III

1943 • 1,120 citations

Quantum Theory of Many-Particle Systems. III. Extension of the Hartree-Fock Scheme to Include Degenerate Systems and Correlation Effects

1955 • 1,103 citations

Ground State of Two-Electron Atoms

1958 • 1,095 citations

On Quantum-Electrodynamics and the Magnetic Moment of the Electron

1948 • 1,077 citations

CIV3 — A general program to calculate configuration interaction wave functions and electric-dipole oscillator strengths

1975 • 1,009 citations

Techniques for the calculation of atomic structures and radiative data including relativistic corrections

1974 • 903 citations

�ber den Grundterm der Zweielektronenprobleme von H?, He, Li+, Be++ usw.

1930 • 777 citations

Many-Body Problem for Strongly Interacting Particles. II. Linked Cluster Expansion

1955 • 757 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><…

1959 • 744 citations

Stabilization Method of Calculating Resonance Energies: Model Problem

1970 • 736 citations

Irreducible tensorial sets

1959 • 730 citations

Successive Approximations by the Rayleigh-Ritz Variation Method

1933 • 707 citations

Resonances in Electron Impact on Atoms

1973 • 707 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><…

1962 • 691 citations

Recent Developments in Perturbation Theory

1964 • 656 citations

The Calculation of Atomic Structures

1960 • 648 citations

The structure of the metastable precipitates formed during ageing of an Al-Mg-Si alloy

1972 • 629 citations

Determination of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mfrac><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mi>h</mml:mi></mml:mrow></mml:mfrac></mml:math>, Using Macroscopic Quantum Phase Coherence in Superconductors: Implications for Quantum Electrodynamics and the Fundamental Physical Constants

1969 • 612 citations

Two-Body Forces and Nuclear Saturation. III. Details of the Structure of the Nucleus

1955 • 601 citations

Configuration interaction in orbital theories

1955 • 583 citations

A multi-configuration Hartree-Fock program with improved stability

1972 • 542 citations

Gauge invariance and relativistic radiative transitions

1974 • 538 citations

Quantum Electrodynamics. III. The Electromagnetic Properties of the Electron—Radiative Corrections to Scattering

1949 • 527 citations

Many-Electron Theory of Atoms and Molecules. I. Shells, Electron Pairs vs Many-Electron Correlations

1962 • 523 citations

Correlation Effects in Atoms

1963 • 518 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>S</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>P</mml:mi></mml:math>States of the Helium Isoelectronic Sequence up to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Z</mml:mi><mml:mo>=</mml:mo><mml:mn>10</mml:mn><mml:mn /></mml:math>

1971 • 515 citations

Numerische Berechnung der 2S-Terme von Ortho- und Par-Helium

1930 • 512 citations

Many-Body Perturbation Theory Applied to Atoms

1964 • 492 citations

The Wave Mechanics of an Atom with a Non-Coulomb Central Field. Part II. Some Results and Discussion

1928 • 485 citations

A New Approximation Method in the Problem of Many Electrons

1935 • 483 citations

Two-Electron Excitation States in Helium.

1965 • 462 citations

Configuration Interaction in Simple Atomic Systems

1961 • 438 citations

Electron scattering by complex atoms

1971 • 438 citations

Note on Hartree's Method

1930 • 435 citations

Studies in Perturbation Theory. X. Lower Bounds to Energy Eigenvalues in Perturbation-Theory Ground State

1965 • 432 citations

Analytical Self-Consistent Field Functions for the Atomic Configurations<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></…

1960 • 422 citations

The Theory and Calculation of Screening Constants

1930 • 419 citations

Logarithmic Terms in the Wave Functions of the Ground State of Two-Electron Atoms

1966 • 407 citations

Theory of Hyperfine Structure

1955 • 400 citations

A multi-configuration Hartree-Fock program

1970 • 372 citations

Ground State of the Helium Atom

1957 • 364 citations

A program for atomic wavefunction computations by the parametric potential method

1971 • 349 citations

Elastic Scattering of Low-Energy Electrons by Atomic Hydrogen

1962 • 348 citations

Absorption Spectrum of Gaseous F- and Electron Affinities of the Halogen Atoms

1963 • 341 citations

The Calculation of Van Der Waals Interactions

1966 • 334 citations

Generalized brillouin theorem for multiconfigurational <scp>SCF</scp> theories

1968 • 322 citations

Correlation Energy in Atomic Systems. V. Degeneracy Effects for the Second-Row Atoms

1968 • 296 citations

Accurate Analytical Self-Consistent Field Functions for Atoms. II. Lowest Configurations of the Neutral First Row Atoms

1962 • 294 citations

Theory of spin-orbit coupling in atoms I. Derivation of the spin-orbit coupling constant

1962 • 294 citations

Compound-Atom States for Two-Electron Systems

1965 • 284 citations

Wave Functions and Oscillator Strengths for the Lithium Isoelectronic Sequence.

1963 • 283 citations

Improved Quantum Theory of Many-Electron Systems. II. The Basic Method

1967 • 265 citations

Effect of a repulsive core in the theory of complex nuclei

1957 • 262 citations

Length and Velocity Formulas in Approximate Oscillator-Strength Calculations

1971 • 260 citations

Atomic Negative Ions

1964 • 260 citations

On the Continuous Absorption Coefficient of the Negative Hydrogen Ion

1945 • 253 citations

NUMERICAL SOLUTION OF THE HARTREE–FOCK EQUATIONS

1963 • 250 citations

The theory of Rayleigh's principle as applied to continuous systems

1928 • 250 citations

The determination of energies and wavefunctions with full electronic correlation

1969 • 239 citations

Computation of Molecular Properties and Structure

1968 • 232 citations

Theory of Atomic Structure Including Electron Correlation. I. Three Kinds of Correlation in Ground and Excited Configurations

1969 • 222 citations

Calculations on the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Ground State of the Lithium Atom Using Wave Functions of Hylleraas Type

1968 • 218 citations

Atomic Bethe-Goldstone Equations. III. Correlation Energies of Ground States of Be, B, C, N, O, F, and Ne

1968 • 210 citations

Many-Electron Theory of Nonclosed-Shell Atoms and Molecules. I. Orbital Wavefunction and Perturbation Theory

1966 • 203 citations

Many-Body Perturbation Theory Applied to Open-Shell Atoms

1966 • 202 citations

A general program to calculate atomic continuum processes using the R-matrix method

1974 • 201 citations

Correlation in the elastic and inelastic S-wave scattering of electrons by H and He⁺

1966 • 200 citations

Atomic Bethe-Goldstone Equations. I. The Be Atom

1967 • 200 citations

A perturbation calculation of properties of the helium iso-electronic sequence

1958 • 199 citations

Two-Electron Atoms III. A Sixth-Order Perturbation Study of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Ground State

1963 • 195 citations

Pseudonatural Orbitals as a Basis for the Superposition of Configurations. I. He2+

1966 • 192 citations

Hyperfine structure in ground multiplets of ¹⁷ O and ¹⁹ F

1965 • 187 citations

Hartree Fock Slater self consistent field calculations

1970 • 183 citations

Many-Electron Theory of Atoms and Molecules. II

1962 • 182 citations

Perturbation Energy Coefficients and Ionization Potentials of the Ground State of Three- to Ten-Electron Isoelectronic Atomic Series

1962 • 181 citations

Graphical Presentations of Systematic Trends of Atomic Oscillator Strengths Along iSOELECTRONIC Sequences and New Oscillator Strengths Derived by Interpolation

1971 • 181 citations

Theoretical Approach to the Calculation of Energies and Widths of Resonant (Autoionizing) States in Many-Electron Atoms

1972 • 178 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>f</mml:mi></mml:math>Values for Transitions between the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display…

1964 • 177 citations

A programme for calculating atomic structures

1969 • 176 citations

Static Approximation and Bounds on Single-Channel Phase Shifts

1962 • 175 citations

Configuration-interaction study of atoms. I. Correlation energies of B, C, N, O, F, and Ne

1974 • 171 citations

On the Ground State of Lithium

1936 • 169 citations

Correlation Energy in Atomic Systems. IV. Degeneracy Effects

1966 • 169 citations

The Helium Wave Equation

1937 • 167 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>f</mml:mi></mml:math>Values for Transitions between the Low-Lying<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>S</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>P</mml:mi></mml:math>States of the Helium Isoelectronic Sequence up to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Z</mml:mi><…

1971 • 166 citations

Nature of the Configuration-Interaction Method inAb InitioCalculations. I. Ne Ground State

1970 • 165 citations

Auto-Ionizing States in Helium

1966 • 165 citations

On the perturbation theory of small disturbances

1956 • 163 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><…

1962 • 159 citations

Atomic Oscillator Strengths-III. Alkali-Like Spectra

1968 • 157 citations

Superposition of Configurations and Atomic Oscillator Strengths—Carbon i and ii

1967 • 157 citations

Modified Perturbation Theory for Atoms and Molecules Based on a Hartree–Fock φ

1968 • 157 citations

Exchange Polarization Effects in Hyperfine Structure

1961 • 152 citations

Approximate Wave Functions for Atomic Be

1960 • 152 citations

Ground State of the Helium Atom. II

1959 • 150 citations

A calculation for the energies and wavefunctions for states of neon with full electronic correlation accuracy

1969 • 150 citations

Radiative Lifetimes of uv Multiplets in Boron, Carbon, and Nitrogen

1966 • 147 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn><mml:mo>,</mml:mo><mml:mn>3</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>3</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:…

1965 • 146 citations

Interaction between Configurations with Several Open Shells

1965 • 144 citations

Oscillator strengths for the helium isoelectronic sequence

1967 • 143 citations

Perturbation-Theory Expansions Through 21st Order of the Nonrelativistic Energies of the Two-Electron Systems<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mn /><mml:mo>(</mml:mo><mml:mn>2</mml:mn><mml:mi>p</mml:mi><mml:mo>)</mml:mo><mml:mn /></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi> </mml:mi><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:…

1965 • 143 citations

Ground State Energy of Two-Electron Atoms

1956 • 138 citations

Zur Frage der theoretischen Deutung der Satelliten einiger Spektrallinien und ihrer Beeinflussung durch magnetische Felder

1924 • 138 citations

Accurate Analytical Self-Consistent Field Functions for Atoms. III. The<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mn>2</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi>m</mml:mi></mml:mrow></mml:msup></mml:mrow><mml:mn>2</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>p</mml:mi></mml:mrow><…

1963 • 138 citations

Atomic Hyperfine Structure. II. First-Order Wave Functions for the Ground States of B,C,N,O, and F

1969 • 137 citations

Resonances in Electron Scattering by Atoms and Molecules

1968 • 137 citations

Low-energy electron scattering by atomic hydrogen: II. The correlation method

1967 • 135 citations

Multiconfiguration wavefunctions obtained by application of the generalized Brillouin theorem

1971 • 133 citations

Wave Functions and Transition Probabilities in Scaled Thomas-Fermi Ion Potentials

1965 • 132 citations

Electronic Wave Functions for Atoms. I. Ground State of Be

1968 • 130 citations

Many-Body Approach to the Atomic Hyperfine Problem. I. Lithium-Atom Ground State

1968 • 130 citations

Configuration-interaction study of atoms. II. Electron affinities of B, C, N, O, and F

1974 • 128 citations

A condition to remove the indeterminacy in interelectronic correlation functions

1969 • 128 citations

Analytical Self-Consistent Field Functions for Positive Ions. I. Isoelectronic Series with 2 to 10 Electrons

1963 • 128 citations

Regularities in Atomic Oscillator Strengths

1968 • 128 citations

Excited<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>S</mml:mi></mml:math>States of Helium

1962 • 127 citations

Theory of Atomic Structure Including Electron Correlation. III. Calculations of Multiplet Oscillator Strengths and Comparisons with Experiments for CII, NI, NII, NIII, OII, OIII, OIV, FII, NeII, and NaIII

1969 • 125 citations

Fine and Hyperfine Structure of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mi> </mml:mi><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Term of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Li</mml:mi…

1967 • 125 citations

Ionization potentials and Lamb shifts of the ground states of ⁴ He and ³ He

1958 • 124 citations

Les problèmes de perturbations et les champs self-consistents

1932 • 123 citations

Theory of electron correlation in atoms and molecules

1961 • 123 citations

Oscillator strengths of transitions in the beryllium sequence

1974 • 122 citations

Two-Electron Atoms II. A Perturbation Study of Some Excited States

1963 • 122 citations

Simple basis sets for molecular wavefunctions containing atoms from Z = 2 to Z = 54

1974 • 121 citations

Electronic wave functions for atoms

1970 • 120 citations

Perturbation Treatment of Hartree-Fock Equations

1961 • 119 citations

The Normal Helium Atom

1935 • 119 citations

The screening approximation for the helium sequence

1960 • 117 citations

Beam-Foil Spectra of Boron 450–5000 Å*

1970 • 117 citations

Angular Dependence of the Laser Photodetachment of the Negative Ions of Carbon, Oxygen, and Hydrogen

1968 • 117 citations

Ground-State Energy of Two-Electron Atoms

1966 • 116 citations

Hartree-Fock and Correlation Energies for 1s2s³S and¹S States of Helium-like Ions

1962 • 114 citations

Variational Calculations on Electron-Helium Scattering

1972 • 113 citations

Modified Optical-Potential Approach to Low-Energy Electron-Helium Scattering

1966 • 113 citations

Some bilinear convergence characteristics of the solutions of dissymmetric secular equations

1969 • 113 citations

Second-order Z-dependent theory of many-electron atoms

1964 • 112 citations

Atomic Hyperfine Structure. I. Polarization Wave Functions for the Ground States of B, C, N, O, and F

1968 • 111 citations

Theory of Core-Electron Contributions to Hyperfine Interactions

1964 • 110 citations

Die Ionisierungsspannung des Heliums nach der Schr�dingerschen Theorie

1927 • 108 citations

Calculation of the hyperfine interaction using an effective-operator form of many-body theory

1975 • 107 citations

Analytical Methods in Hartree-Fock Self-Consistent Field Theory

1961 • 107 citations

Configuration Interaction in the Helium Continuum

1966 • 107 citations

Applicability of Roothaan's Self-Consistent Field Theory

1960 • 107 citations

Atomic Bethe-Goldstone Equations. II. The Ne Atom

1967 • 107 citations

Atomic Negative Ions. Second Period

1964 • 107 citations

Antishielding of Magnetic and Electric Hyperfine Interactions in Open Shell Ions

1963 • 106 citations

Upper and Lower Bounds to Atomic and Molecular Properties. I. Be-Sequence Oscillator Strengths (Dipole-Length Formulation) for the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi> </mml:mi><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mn>2</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi> </mml:mi><mml:mn>2</mml:mn></mml:mrow></mml…

1973 • 106 citations

Mean-Life Measurements of Excited Electronic States in Neutral and Ionic Species of Beryllium and Boron

1969 • 106 citations

Hylleraas Variational Calculation of Auto-Ionization States

1967 • 104 citations

The Calculation of Atomic Transition Probabilities

1969 • 104 citations

Many-Electron Theory of Atoms and Molecules. V. First-Row Atoms and Their Ions

1964 • 103 citations

Superposition of Configurations and Atomic Oscillator Strengths - Boron Isoelectronic Sequence

1969 • 102 citations

Improved Quantum Theory of Many-Electron Systems. III. The GF Method

1968 • 102 citations

Unrestricted Hartree-Fock Method

1956 • 102 citations

On the Calculation of Some Atomic Integrals Containing Functions of r12, r13, and r23

1963 • 100 citations

Ground State of the Helium Atom

1962 • 100 citations

Mean lives of excited terms in Be I, Be II, B I, B II, C II and C III

1969 • 100 citations

Correlation Effects in Complex Spectra. II. Transition Probabilities for the Magnesium Isoelectronic Sequence

1967 • 100 citations

New Investigation of the 1SeAutoionizing States of He and H−

1966 • 100 citations

Intercombination Oscillator Strengths in the Helium Sequence

1969 • 100 citations

Many-Electron Theory of Atoms and Molecules. IV. Be Atom and Its Ions

1964 • 99 citations

Theory of Atomic Structure Including Electron Correlation. II. All-External Pair Correlations in the Various States and Ions of B, C, N, O, F, Ne, and Na, and Prediction of Electron Affinities and Atomic Excitation Energies

1969 • 99 citations

Atomic Multiconfiguration Self-Consistent-Field Wavefunctions

1969 • 98 citations

Core polarization corrections to oscillator strengths and singlet-triplet splittings in alkaline earth atoms

1972 • 98 citations

Series perturbations in atomic spectra: Superposition-of-configurations calculations on Al I and Al II

1974 • 98 citations

Study of the Contact-Term Contribution to the Hyperfine Structure Obtained from Spin-Unrestricted Hartree-Fock Wave Functions

1970 • 96 citations

Contribution of Core Polarization to the Atomic Hyperfine Structure and Knight Shift of Li and Na

1959 • 96 citations

Energy-Term Calculations with Hellmann-Type Pseudopotential

1965 • 94 citations

Theoretical Multiplet Strengths for Mg I, Al II, and Si III

1967 • 93 citations

The excitation of He+ by electron impact

1969 • 91 citations

Experimental Determination of Absolute A Coefficients for 'Forbidden' Atomic Oxygen Lines

1975 • 91 citations

Inelastic Scattering of Electrons by Helium

1973 • 90 citations

Electron Correlation and Separated-Pair Approximation. An Application to Berylliumlike Atomic Systems

1968 • 88 citations

An expansion method for calculating atomic properties IV. Transition probabilities

1964 • 88 citations

Perturbation Study of Some Excited States of Two-Electron Atoms

1969 • 86 citations

New Autoionizing Levels in Helium

1965 • 85 citations

Hyperfine Structure Formulas for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>LS</mml:mi></mml:math>Coupling

1953 • 85 citations

Spin-Optimized Self-Consistent Field Wave Functions

1969 • 85 citations

Theory of Atomic Structure Including Electron Correlation. IV. Method for Forbidden-Transition Probabilities with Results for [O I], [O II], [O III], [N I], [N II], and [C I].

1971 • 84 citations

Mean Lives of Excited Levels in O i–O vi*

1971 • 84 citations

Inter- and Intra-Atomic Correlation Energies and Theory of Core-Polarization

1960 • 83 citations

Many-Electron Theory of Nonclosed-Shell Atoms and Molecules. II. Variational Theory

1966 • 82 citations

Correlation Effects in Atoms. III. Four-Electron Systems

1967 • 82 citations

2$sup 1$,$sup 3$P, 3$sup 1$,$sup 3$P, AND 4$sup 1$,$sup 3$ STATES OF He AND THE 2$sup 1$P STATE OF Li$sup +$

1965 • 82 citations

The n^{3}P_{2}-1^{1}S_{0} Magnetic-Quadrupole Transitions of the Helium Sequence

1969 • 81 citations

Configuration mixing and oscillator strengths for some two-electron spectra (Ca I, Ba I, and others)

1969 • 81 citations

The Unrestricted Hartree-Fock Method

1961 • 81 citations

A new version of a general program to calculate angular momentum integrals in atomic structure

1971 • 81 citations

Oscillator Strengths for Singlet and Triplet Series in Neutral Helium

1966 • 80 citations

Perturbation Theory of Many-Electron Atoms and Molecules

1961 • 80 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>P</mml:mi></mml:math>Auto-Ionization States of He and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

1969 • 79 citations

A program for the extraction of radiative lifetimes from experimental beam-foil intensity decay data

1974 • 79 citations

The photoionization cross section of magnesium near threshold

1973 • 79 citations

Does the Electron Have an Intrinsic Magnetic Moment?

1947 • 79 citations

Beam-foil Studies of Energy Levels and Radiative Lifetimes in Be I and Be II

1972 • 79 citations

Many-Electron Theory of Atoms and Molecules. III. Effect of Correlation on Orbitals

1963 • 79 citations

Hyperfine Splitting of the Lithium Ground State

1960 • 78 citations

Lifetimes an Oscillator Strengths in Spectra of Be, B and C

1971 • 77 citations

Atomic Bethe-Goldstone Calculation of the Hyperfine Structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">Li</mml:mi><mml:mo>(</mml:mo><mml:mn>2</mml:mn><mml:mn /><mml:mi> </mml:mi><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow><mml:mo>)</mml:mo></mml:math>

1970 • 77 citations

Atomic Oscillator Strengths--IV: Transitions of the Type s2-sp and ss-sp

1968 • 76 citations

Analytical Self-Consistent Field Functions. III. Isoelectronic Series with 19 to 30 Electrons

1964 • 76 citations

A general program for calculating angular momentum integrals in atomic structure

1970 • 76 citations

A program to calculate a general recoupling coefficient

1970 • 76 citations

Bound-State Calculation of Scattering Resonance Energies

1970 • 76 citations

Magnetic Quadrupole Line Intensities

1967 • 75 citations

Comment on "Length and Velocity Formulas in Approximate Oscillator-Strength Calculations"

1973 • 74 citations

Hyperfine Structure of Sodium

1970 • 74 citations

Comments on the Be I 2s²¹S-2s2p¹P transition probability

1974 • 73 citations

Correlation study of Be<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mn>2</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>by a separated-pair numerical multiconfiguration Hartree-Fock procedure

1974 • 73 citations

Many-Body Approach to Hyperfine Interaction in Atomic Nitrogen

1969 • 73 citations

Beam-foil spectroscopy and new atomic structure theory with a survey of results since 1970

1973 • 72 citations

Correlation Effects in Complex Spectra. I. Term Energies for the Magnesium Isoelectronic Sequence

1966 • 71 citations

Photo-Ionization Cross Section of Beryllium near Threshold

1968 • 71 citations

Structure and Oscillator Strengths of Autoionizing Levels in Helium

1965 • 71 citations

Diagonal and Off-Diagonal Hyperfine Structure in the Ground Multiplets of Boron and Aluminum by the Atomic Beam Method; Magnetic Dipole Radial Parameters

1972 • 70 citations

Auto-ionization states of two electron atoms

1972 • 70 citations

Symmetry-Adapted Pair Correlations in Ne,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Ne</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>, …

1971 • 70 citations

Core Polarization and Hyperfine Structure of the B, C, N, O, and F Atoms

1969 • 69 citations

Optical Detection of Zero-Field Hyperfine Splitting of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Na</mml:mi></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>

1958 • 69 citations

Atomic Bethe-Goldstone Calculations of Term Splittings, Ionization Potentials, and Electron Affinities for B, C, N, O, F, and Ne

1971 • 69 citations

A general program to calculate angular momentum coefficients in relativistic atomic structure

1973 • 69 citations

Beam-Foil Study of Nitrogen in the Vacuum Ultraviolet

1972 • 69 citations

Off—Diagonal Hypervirial Theorem and Its Applications

1964 • 68 citations

Dipole oscillator strengths, with rigorous limits of error, for He and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Li</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

1974 • 68 citations

Electronic Wave Functions for Atoms. IV. Ground State of Ne

1970 • 68 citations

Many-Body Approach to Hyperfine Structure in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>State of Lithium

1969 • 67 citations

Correlation energy of the neon atom

1969 • 66 citations

Remarks on Brillouin's theorem in the atomic variational approach

1972 • 65 citations

Oscillator strengths in first row neutral, singly and doubly ionized atoms: Comparison of recent theoretical and experimental values

1973 • 65 citations

The solution of Schrödinger's equation for two-electron systems by an MCHF procedure

1973 • 65 citations

Hyperfine Contact Interactions in Oxygen Calculated by Many-Body Theory

1968 • 65 citations

Ground-State Energy of Two-Electron Atoms. Corrective Results

1958 • 64 citations

Open shell calculations for the two- and three-electron ions

1958 • 64 citations

Wavefunctions and Correlation Energies for Two-, Three-, and Four-Electron Atoms

1968 • 64 citations

Calculation of Upper and Lower Bounds to Oscillator Strengths

1971 • 63 citations

Calculations of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mi>s</mml:mi><mml:mi>n</mml:mi><mml:mi>s</mml:mi><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mi>p</mml:mi><mml:mn…

1972 • 63 citations

Calculation of Energies and Widths of Resonances in Inelastic Scattering: Stabilization Method

1972 • 63 citations

Hyperfine Structure of Oxygen Calculated by Many-Body Theory. II

1969 • 63 citations

Wavefunctions and oscillator strengths of the beryllium iso-electronic sequence

1972 • 62 citations

Calculation of the Hyperfine Constants for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mrow><mml:mn>11</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>17</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>

1962 • 62 citations

Atomic Bethe-Goldstone Calculations of Term Splittings, Ionization Potentials, and Electron Affinities for B, C, N, O, F, and Ne. II. Configurational Excitations

1972 • 61 citations

New Type of Wave Function for Li,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Be</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>, and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow…

1968 • 61 citations

Theoretical oscillator strengths for the beryllium 1s²2s²¹S-1s²2s2p¹P⁰, 1s²2s2p¹P⁰-1s²2p²¹D and 1s²2s2p¹P⁰-1s²2p²¹S isoelectronic sequences

1973 • 60 citations

Energies and Expectation Values for Be by the Transcorrelated Method

1969 • 60 citations

Electronic Polarizabilities and Sternheimer Shielding Factors

1963 • 60 citations

Hyperfine Structure of Atomic Nitrogen

1962 • 60 citations

Analytical Self-Consistent Field Functions for Positive Ions. II. Isoelectronic Series with 11 to 18 Electrons

1963 • 60 citations

An expansion method for calculating atomic properties, V. Transition probabilities of M shell electrons

1965 • 59 citations

Atomic and Molecular Calculations with Pseudopotential Method. IV. Excited Atomic Valence-Electron Energy Values, Wavefunctions, and Oscillator Strengths

1969 • 58 citations

Atomic Negative Ions: The Iron Series

1964 • 58 citations

On the energy difference between thelP and3P states of the beryllium isoelectronic sequence

1971 • 58 citations

A program to evaluate the reduced matrix elements of summations of one-particle tensor operators

1973 • 58 citations

Pseudopotential Theory of Atoms and Molecules. I. A New Method for the Calculation of Correlated Pair Functions

1968 • 57 citations

Logarithmic Terms in the Wave Functions of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml…

1967 • 57 citations

Correlation Energy of the Neon Atom

1971 • 56 citations

An expansion method for calculating atomic properties X. 1 s ^{2 1} S -1 snp ¹ P transitions of the helium sequence

1967 • 56 citations

Brueckner-Goldstone Many-Body Theory for the Hyperfine Structure of Phosphorus

1968 • 56 citations

Magnetic Hyperfine Structure of Lithium, Using an Approximate Projected Hartree-Fock Method

1968 • 56 citations

Atomic Many-Body Problem. III. The Calculation of Hylleraas-Type Correlated Wave Functions for the Beryllium Atom

1967 • 56 citations

Microwave Zeeman Spectrum of Atomic Fluorine

1961 • 55 citations

Spin—Orbit Coupling and Electron-Affinity Determinations from Radiative Capture of Electrons by Oxygen Atoms

1965 • 55 citations

Spectral Lines in the Be I Isoelectronic Sequence

1972 • 54 citations

Calculation of Extended Hartree-Fock Wavefunctions

1968 • 54 citations

Many-Electron-Theory ab Initio Calculation for the Be Atom

1965 • 54 citations

The singlet S states of the helium isoelectronic sequence

1967 • 53 citations

Rayleigh-Schrödinger multiple perturbation theory

1969 • 52 citations

Quantum defect theory V. Autoionizing and bound states of the neutral beryllium atom

1967 • 52 citations

Electron Affinity of Atomic Sulfur and Empirical Affinities of the Light Elements

1956 • 51 citations

Model potential calculations of Be I and Mg I oscillator strengths

1973 • 51 citations

Model potential calculations of sodium and potassium oscillator strengths

1971 • 50 citations

An expansion method for calculating atomic properties VII. The correlation energies of the lithium sequence

1966 • 50 citations

Variational Calculation of the Ground State of the Lithium Atom

1963 • 50 citations

Calculation of Energies and Widths of Compound-State Resonances in Elastic Scattering: Stabilization Method

1971 • 50 citations

Magnetic Hyperfine Structure of Lithium

1967 • 49 citations

Accurate Analytical Self-Consistent Field Functions for Atoms. IV. Ground States and Several Excited States for Atoms and Ions of Al and Cu

1963 • 49 citations

Infrared Absorption Spectra of SO2 and CO2 in Aqueous Solution

1958 • 49 citations

Correlation Energies of Some States of 3-10 Electron Atoms

1969 • 49 citations

Calculation of Autoionization Levels in He

1963 • 49 citations

Model potential calculation of the electron affinity of lithium

1972 • 48 citations

Atomic Bethe-Goldstone Calculations of the Hyperfine Structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">B</mml:mi><mml:mo>(</mml:mo><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow><mml:mo>)</mml:mo></mml:math>

1970 • 48 citations

Close-Coupling Calculations of Electron-Impact Excitation of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mi>s</mml:mi></mml:math>State and Autoionization Below the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>n</mml:mi><mml:mo>=</mml:mo><mml:mn>3</mml:mn><mml:mn /></mml:math>Level in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant…

1967 • 47 citations

HYPERFINE STRUCTURE OF THE LEVEL OF LITHIUM-6 AND LITHIUM-7

1965 • 47 citations

Configuration maxing in the Al sequence

1968 • 47 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Δ</mml:mi><mml:mi>S</mml:mi><mml:mo>=</mml:mo><mml:mo>±</mml:mo><mml:mn>1</mml:mn></mml:math>Magnetic Multipole Radiative Transitions

1964 • 47 citations

Analytical Hartree—Fock Functions. IV. Isoelectronic Series for 31 to 36 Electrons and Conclusions

1964 • 47 citations

Nuclear-Charge-Expansion Method for (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi>a</mml:mi></mml:mrow></mml:msup></mml:mrow><mml:mi /><mml:mn>2</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>b</mml:mi></mml:mrow></mml:msup></mml:mrow><mml:mo>−</mml:mo><mml:mn>2</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:…

1973 • 46 citations

On the length, velocity and acceleration expressions for the calculation of accurate oscillator strengths in many-electron systems

1975 • 46 citations

Beam-Foil Spectroscopy of Carbon in the Vacuum Ultraviolet

1971 • 46 citations

Systematic trends and atomic oscillator strengths

1973 • 46 citations

HARTREE–FOCK WAVE FUNCTIONS FOR EXCITED STATES: THE 2 ¹S STATE OF HELIUM

1965 • 46 citations

Hyperfine structure measurements in⁷⁵As,³¹P and⁵³Cr

1964 • 45 citations

Theory of Atomic Hyperfine Structure

1966 • 45 citations

Resonance Transition Probabilities for Third-Row Atoms and Ions (Mgi, Siii-iii, Pii, Piv, Sii-iii, Cliii) Including the Important Correlation Effects

1972 • 45 citations

Computation of resonance parameters for elastic scattering

1971 • 44 citations

Variational Perturbation Theory Study of Some Excited States of Two-Electron Atoms

1970 • 44 citations

Forbidden Transitions in the C i Sequence

1971 • 44 citations

Relativistic corrections to atomic energy levels

1970 • 43 citations

Hartree-Fock Procedure for Some<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ns</mml:mi><mml:mrow><mml:msup><mml:mrow><mml:mi>n</mml:mi></mml:mrow><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mi>s</mml:mi><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Configurations

1966 • 43 citations

Series Perturbations and Atomic Oscillator Strengths: The<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>D</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Series of Al I

1969 • 43 citations

Wave Functions for the Excited States of Neutral Helium

1965 • 42 citations

Theoretical Atomic Transition Probabilities

1968 • 42 citations

Variational Calculation of the Lowest<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>State of the Lithium Atom

1973 • 42 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>D</mml:mi></mml:math>Autoionization States of He and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

1972 • 42 citations

Relativistic Hartree-Fock Hyperfine-Structure Calculations for the Scandium, Copper, Gallium, and Bromine Atoms

1970 • 42 citations

Low-energy scattering of electrons by the neutral argon atom

1974 • 42 citations

The Theory of Pair-Correlated Wave Functions

1966 • 41 citations

Messung der Absorptionsoszillatorenstärken von CI-Multipletts im Bereich zwischen 1100 und 1800 Å

1963 • 41 citations

The two-configuration approximation for four-electron ions

1961 • 41 citations

R-matrix theory of atomic polarizabilities

1972 • 40 citations

Intercombination-Line Oscillator Strengths in the Helium and Beryllium Isoelectronic Sequences

1967 • 40 citations

Autoionization States of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Li</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Na</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

1972 • 40 citations

Hartree-Fock Wave Functions without Symmetry and Equivalence Restrictions and the Calculation of Hyperfine-Structure Expectation Values for the Lowest<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>States of Boron and Lithium

1970 • 39 citations

Recent lifetime measurements for oxygen, fluorine and neon in the vacuum ultraviolet

1973 • 39 citations

Electron-Impact Excitation Cross Sections for Atomic Oxygen:<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow><mml:mo>−</mml:mo><mml:mn>3</mml:mn><mml:mi>s</mml:mi><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mrow /><mml:mrow><mml:mn>0</mml:mn…

1972 • 39 citations

Gauge invariance and radiative transition probabilities

1975 • 39 citations

Correlation Energy of the Ground State of C

1970 • 38 citations

Open Configuration Calculations for Lithium

1957 • 38 citations

A fixed core Hartree-Fock program for calculating bound and continuum orbitals

1974 • 38 citations

Hyperfine Structure of the Stable Lithium Isotopes. I

1966 • 38 citations

Formulation of the Quantum-Mechanical Many-Body Problem in Terms of One- and Two-Particle Functions

1963 • 37 citations

Atomic Oscillator Strengths-I: Neutral Silicon

1968 • 37 citations

Variational calculations of correlated wavefunctions and energies for ground, low-lying as well as highly excited discrete states in many-electron atoms using a new atomic structure theory including electron correlation

1973 • 37 citations

Correlation Energy of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Ground State of Neutral Carbon

1971 • 36 citations

Multiplet Splittings and IS,3p, Intercombination-Line Oscillator Strengths in be i and MG I

1974 • 36 citations

Towards an understanding of the form of correlated wavefunctions for atoms

1973 • 36 citations

Variational-Bound Method for Autoionization States

1969 • 36 citations

Atomic Bethe-Goldstone Equations. IV. Valence-Shell Correlation Energies of Ground States of Na, Mg, Al, Si, P, S, Cl, and Ar

1971 • 35 citations

Transition probability and oscillator strength by perturbation theory: 1s3p^1,3P−1s3d^1,3D transition in helium isoelectronic sequence

1969 • 35 citations

Light Ions of Astrophysical Interest-Radiative Transition Probabilities for C III, N IV, O V AND Ne VII

1974 • 35 citations

Calculation of the dynamic dipole polarizabilities and Van der Waals coefficients of beryllium and carbon atoms in the ground state

1973 • 35 citations

Resonances and Pseudoresonances in the Kohn Variational Method and the Feshbach Method

1971 • 35 citations

Wave functions and oscillator strengths of Be-like ions (Be I, C III, N IV, O V)

1965 • 35 citations

Relativistic effects on transition probabilities³P₁→¹S₀for group II elements

1974 • 35 citations

HARTREE–FOCK WAVE FUNCTIONS FOR EXCITED STATES: II. SIMPLIFICATION OF THE ORBITAL EQUATIONS

1966 • 35 citations

Electron Correlation and Augmented Separated-Pair Expansion

1968 • 35 citations

Magnetic Hyperfine Structure and Core Polarization in the Excited States of Lithium

1968 • 35 citations

Hyperfine Structure of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>3</mml:mn><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:…

1973 • 35 citations

Lower Bound to the Ground-State Energy and Mass Polarization in Helium-Like Atoms

1956 • 34 citations

Symmetry-Adapted Pair Correlations in O and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

1972 • 34 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mfrac><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow><mml:mi>Z</mml:mi></mml:mrow></mml:mfrac></mml:math>expansion study of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mn /><mml:mo>(</mml:mo><mml:mn>1</mml:mn><mml:mi>s</mml:mi><mml:mo>)</mml:mo><mml:mn /></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mn>2</mml:mn><mml:…

1974 • 34 citations

Approximate Analytical Wave Functions for the 1s2ns 2S½ States of Li and Li-Like Ions

1961 • 34 citations

An expansion method for calculating atomic properties. VIII. Transitions in the Hartree-Fock approximation

1966 • 34 citations

L’interaction de configuration comme méthode de calcul des orbitales moléculaires du champ self-consistent

1956 • 34 citations

Lifetime of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mn>3</mml:mn><mml:mi>s</mml:mi><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>5</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Metastable State of …

1972 • 33 citations

The Convergence of the Close Coupling Expansion

1963 • 33 citations

Orthogonality to Lower States and the Hartree—Fock Method

1966 • 33 citations

Many-Body Theory of the Magnetic Hyperfine Interaction in the Excited State (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mn>2</mml:mn><mml:mi>s</mml:mi><mml:mn>2</mml:mn><mml:mi>p</mml:mi><mml:mi /><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>3</mml:mn…

1973 • 32 citations

Ground-State Energy of Lithium and Three-Electron Ions by Perturbation Theory

1967 • 32 citations

Electron Affinities of Atoms and Molecules

1965 • 32 citations

Configuration Interaction in Two- and Three-Electron Atoms

1966 • 32 citations

Energy Levels, Oscillator Strengths and Forbidden Transition Probabilities in the Sc II Isoelectronic Sequence

1969 • 32 citations

First-order Solutions of Atomic Hartree-Fock Equations

1963 • 31 citations

Angular momentum coupling coefficients

1970 • 31 citations

Electric Quadrupole Transitions in Na I, Mg II and Al III

1972 • 31 citations

Variational Upper and Lower Bounds to Dipole Transition Moments

1970 • 31 citations

Analytical Hartree‐Fock wavefunctions for the neutral atoms from helium to xenon

1974 • 31 citations

Open Configuration Calculations for Beryllium

1958 • 31 citations

Calculation of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow><mml:mo>(</mml:mo><mml:mn>2</mml:mn><mml:mi>s</mml:mi><mml:mi /><mml:mn>2</mml:mn><mml:mi>p</mml:mi><mml:mo>)</mml:mo></mml:math>Autoionization State of He with a Pseudostate Nonresonant Continuum

1973 • 31 citations

Matrix variational calculations of electron scattering by C, N, and O atoms

1974 • 30 citations

Zur Theorie der Edelmetalle

1956 • 30 citations

Theoretical Analysis of Level Crossing in a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Atomic State

1970 • 29 citations

Oscillator strengths in the beryllium sequence

1973 • 29 citations

The Hartree Energies of the Helium Sequence

1961 • 29 citations

Cancellation effects in computed lifetimes of 3s3pn levels for third-row atoms and ions

1973 • 29 citations

NOTE ON THE HYPERFINE STRUCTURE OF THE 2s²2p STATE OF BORON 10 AND 11

1960 • 29 citations

Properties of the Lithium Sequence

1968 • 29 citations

Length and velocity formulae in approximate oscillator strength calculations

1972 • 29 citations

On the Variation—Perturbation Method for Excited States

1966 • 28 citations

Adaptation of a general program to calculate angular momentum integrals in atomic structure: Inclusion of the one-electron part of the Hamiltonian

1974 • 28 citations

Multiconfiguration Hartree-Fock calculations. IV. Calculations of the 2p³and 2p⁴isoelectronic series

1971 • 28 citations

Systematic trends of hartree-fock oscillator strengths along the sodium isoelectronic sequence

1975 • 28 citations

Photoionization of the (3s, 3p:¹P) state of magnesium

1974 • 27 citations

Elastic scattering of slow electrons by helium

1973 • 27 citations

Systematic Trends of Atomic Oscillator Strengths in Isoelectronic Sequences

1968 • 27 citations

B,C,N,OとF原子の閉殻分極と超微細構造

1969 • 27 citations

The triplet S states of the helium isoelectronic sequence

1967 • 27 citations

Recent Progress in Studies of Atomic Spectra and Transition Probabilities by Beam-foil Spectroscopy

1974 • 27 citations

Helium Atom: A Fifth-Order Wavefunction

1962 • 27 citations

Explicit Solution for the Wavefunction and Energy in Degenerate Rayleigh–Schrödinger Perturbation Theory

1971 • 27 citations

Correction of Configuration-Interaction Wavefunctions by Perturbation Theory

1966 • 26 citations

Tests of the multiconfiguration energy-bound method for Feshbach- type autoionization states of two-electron atoms. I. Application to He states below the n=2 threshold

1970 • 26 citations

Semiprecision Calculations of Electron-Hydrogen Resonances

1973 • 26 citations

Oscillator strengths of astrophysical interest from lifetime data

1973 • 26 citations

Born cross sections for the excitation of the resonance lines of magnesium and calcium

1974 • 26 citations

Effect of Correlation on the Hyperfine Interaction in Lithium

1963 • 26 citations

Perturbative Studies of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Lithium Atom: Total Energy and Hyperfine Interaction

1972 • 26 citations

Some Multiplet Strengths for Transitions in fe XVI and fe XV.

1964 • 26 citations

On the Orthogonality Problem for Excited States

1963 • 25 citations

Oscillator Strengths and Excited-State Lifetimes in the Sodium Sequence

1975 • 25 citations

Electronic wave functions X. A calculation of eight variational poly-detor wave functions for boron and carbon

1953 • 25 citations

The multi-configuration frozen core approximation. I. Eigenstates of the two-electron atom

1971 • 25 citations

Electron Correlation and Augmented Separated-Pair Expansion in Berylliumlike Atomic Systems

1968 • 25 citations

Open-Shell Energies of Lithium-Like Ions

1958 • 25 citations

Fractional parentage coefficients for equivalent p shell and equivalent d shell electrons

1969 • 25 citations

Autodetachment States of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

1973 • 24 citations

Some Remarks on the Use of the Variational Principle for the Second-Order Energy

1965 • 24 citations

Correlation effects important for accurate oscillator strengths

1974 • 24 citations

Wave functions and oscillator strengths of some iron and Be-like ions with configuration mixing

1966 • 24 citations

Radiative lifetimes of U.V. multiplets in atomic carbon, nitrogen and oxygen

1971 • 23 citations

Correlation Energies of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mrow><mml:msup><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mn>3</mml:mn><mml:mi>l</mml:mi><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>L</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>States of the …

1969 • 23 citations

Calculations of the Hyperfine Splitting for the Lithium Atom

1963 • 23 citations

Autoionization states in He and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>by the stabilization method

1974 • 23 citations

Calculation of Magnetic Hyperfine Constant of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">P</mml:mi></mml:mrow><mml:mrow><mml:mn>31</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>

1964 • 23 citations

First-Order Perturbation Corrections to the Hartree-Fock Approximation for Helium

1963 • 23 citations

Doubly excited states of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

1974 • 22 citations

Van der Waals coefficients for atomic systems involving non-spherical atoms

1972 • 22 citations

Hylleraas-Type Calculations of the Be Ground State

1973 • 22 citations

Magnetic-quadrupole decay of the low-lying n³P₂states of helium like ions

1972 • 22 citations

The effect of symmetry restrictions upon the hyperfine properties

1971 • 22 citations

Comparison of calculated oscillator strengths for Si III

1969 • 22 citations

Transition probabilities in the lithium isoelectronic sequence

1973 • 21 citations

Perturbation corrections to Hartree-Fock oscillator strengths for helium

1972 • 21 citations

Study of the Nuclear Quadrupole Interaction in the Excited (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>) State of the Beryllium Atom by Many-Body Perturbation Theory

1973 • 21 citations

CFPJJ—Fractional parentage coefficients for equivalent electrons in jj-coupling

1972 • 21 citations

Doubly Excited Feshbach States of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Cl</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

1973 • 21 citations

Combined <scp>CI</scp>–<scp>HY</scp> studies of atomic states. II. Compact wave functions for the be ground state

1975 • 21 citations

Theoretical lifetimes of the metastable 5S02 states in atomic carbon and oxygen

1972 • 21 citations

Line Strengths in Two-Electron Spectra

1968 • 21 citations

Atomic Oscillator Strengths--VI Transitions of the type p2-ps

1969 • 21 citations

Electron Correlations and Quadrupole Hyperfine Structure of Li<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>

1972 • 21 citations

Pseudopotential Theory of Atoms and Molecules. II. Hylleraas-Type Correlated Pair Functions for Atoms with Two Valence Electrons

1972 • 21 citations

Multiconfiguration Hartree-Fock Calculations. II. Calculation of the Lowest<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>D</mml:mi></mml:mrow><…

1969 • 20 citations

Correlation Energies of the Lithium Sequence

1968 • 20 citations

Hartree-Fock Results for Some Excited States of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo><mml:mn>2</mml:mn><mml:mn /></mml:mrow></mml:msup></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></…

1965 • 20 citations

THE ORTHOGONALITY ASSUMPTION IN THE HARTREE–FOCK APPROXIMATION

1967 • 19 citations

Theory of Correlated Wavefunctions. III. Alternative Initial Approximations

1967 • 18 citations

HFS constants of Be I 1s22s2p 3p0, B I 1s22s2p24P and B I 1s22s2p22D obtained from the non-closed shell many-electron theory for excited states

1973 • 18 citations

Pair Correlations in Closed-Shell Systems

1964 • 18 citations

A non-relativistic SCF atomic program to compute one-electron energies, total energies, and slater integrals

1974 • 18 citations

Atomic Oscillator Strengths-II: Neutral Magnesium

1968 • 17 citations

1s²2s²S_1/2-1s2s2p⁴P_5/2and 1s²2s²¹S₀-1s²2s2p³P₂magnetic quadrupole transitions

1975 • 17 citations

A perturbation calculation on helium

1972 • 17 citations

Hyperfine-Structure Calculations for Atoms with the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mn /><mml:mo>(</mml:mo><mml:mn>4</mml:mn><mml:mi>p</mml:mi><mml:mo>)</mml:mo><mml:mn /></mml:mrow><mml:mrow><mml:mi>N</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math>Ground-State Configuration

1969 • 16 citations

Saddle-point character of Hartree-Fock energies

1969 • 16 citations

Tests of the multiconfiguration energy-bound method for Feshbach-type autoionization states of two-electron atoms II. Application to He states between higher thresholds

1971 • 16 citations

Oscillator strengths for helium

1970 • 16 citations

Oscillator strengths for 3dn4s → 3dn4p transitions in the iron series

1973 • 15 citations

Tables of One- and Two-Particle Coefficients of Fractional Parentage for Configurations SλS′μpq

1969 • 15 citations

Addendum to "Autoionization states in He and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>by the stabilization method"

1974 • 15 citations

Cascade-effect suppression in beam-foil mean-life measurements

1973 • 15 citations

The hyperfine structure of the 2p²P levels of lithium

1967 • 15 citations

A program to evaluate the reduced matrix elements of one-particle tensor operators for the configurations in JJ-coupling

1974 • 14 citations

K. Smith: The Calculation of Atomic Collision Processes, Wiley-Interscience, New York, 1972, x+218ページ, 23.5×16cm, $13.95

1973 • 14 citations

Two theorems on the variation perturbation method for the excited states of stationary quantum systems

1967 • 14 citations

Saddle-point character of the hartree-fock energy

1967 • 14 citations

On the orthogonality condition for the excited states of stationary quantum systems

1968 • 14 citations

Measurements of Relative Oscillator Strengths of Some CII Multiplets

1967 • 14 citations

Hyperfine Splitting of the Ground State of Lithium

1968 • 13 citations

A new version of the program to compute the fractional parentage coefficients for equivalent d shell electrons

1973 • 13 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mn /><mml:mo>(</mml:mo><mml:mn>1</mml:mn><mml:mi>s</mml:mi><mml:mo>)</mml:mo><mml:mn /></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mn>3</mml:mn><mml:mi>s</mml:mi><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></…

1975 • 13 citations

Variational Calculation of the Ground State of the Lithium Atom

1969 • 13 citations

Oscillator strengths for the 3d–4p and 4p–4d transitions in sodium-like ions

1973 • 13 citations

Z^-1/2expansion of the unrestricted Hartree-Fock equations for the (1s)(1s )¹S states of helium and helium-like ions

1967 • 13 citations

TheZ-expansion of unrestricted Hartree-Fock atomic orbitals

1964 • 12 citations

A New Method for the Calculation of Level Shifts of Autoionizing States of Atoms with Application to the 2s2p^1,3P Autoionizing States of Two-Electron Atoms

1973 • 12 citations

Theory of Correlated Wavefunctions. IV. A ``Configuration Interaction Plus Perturbation'' Approach

1967 • 12 citations

Computation of wavefunctions for the helium isoelectronic sequence

1970 • 12 citations

Open-Shell Calculations of Hyperfine Splitting for the Ground State of Li-Like Ions

1962 • 12 citations

Nuclear charge expansion method for 1snl^1,3L-1sn'L'^1,3L' transitions in the helium isoelectronic sequence

1973 • 12 citations

A correlation study of Li ground state by the <scp>MCHF</scp> procedure

1975 • 12 citations

Z^-1/2expansion of the unrestricted Hartree-Fock equations for the (1s)(1s')¹S states of helium and helium-like ions: II

1967 • 12 citations

Calculated Wavelengths for Transitions BetweenSandPStates in Two-Electron Atoms and Comparison with Experiment

1969 • 12 citations

The magnetic hyperfine structure of the ground state of lithium and lithium-like ions

1970 • 12 citations

Extended Hartree–Fock Calculations for Li and Li-like Ions

1969 • 11 citations

All single excitations in multiconfigurational wave functions

2009 • 11 citations

Atomic Hyperfine Structure. III. Excited States of C,N, and O

1969 • 11 citations

Single-particle substitution sums in the second-order Z-expansion theory of atomic energies

1970 • 11 citations

Reduction of a three-electron atomic integral

1966 • 10 citations

A general program to calculate the matrix of the spin-orbit interaction

1975 • 10 citations

Theory of Correlated Wavefunctions. II. The Symmetry Properties of Atomic Correlated Wavefunctions

1966 • 10 citations

Application of the multiconfiguration energy bound method to the Feshback-type^1,3P^eautoionization states of He

1972 • 10 citations

General Theory of Autoionizing States of Two-Electron Systems

1970 • 10 citations

A critical review of programs in atomic structure for bound states

1973 • 10 citations

Evaluation of the Orbit-Dependent Hyperfine Constants of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mi>p</mml:mi></mml:math>-Series Atoms from Multiconfiguration Hartree-Fock Wave Functions

1973 • 10 citations

Z expansion of 1s2 2s2 2p2 - 1s2 2s 2p3 transitions in the carbon sequence

1974 • 9 citations

Reply to comments by J. Sokoloff

1965 • 9 citations

A perturbation treatment of the Hartree-Fock equations for 2s2p³P and¹P weakly quantized states of helium-like ions

1968 • 9 citations

Arbitrary 3 n-j symbols for SU (2)

1970 • 9 citations

ヘリウムおよびヘリウム様イオンの(1s)(1s’)iS状態の無抱束ハートリー一フォック方程式のZ12展開

1967 • 9 citations

Hydrogenic Rk integrals

1970 • 9 citations

Oscillator strengths by perturbation theory

1968 • 9 citations

Perturbation calculations without H° or H1

1968 • 9 citations

An ab initio calculation of energy levels and transition probabilities in the spectrum of Ar I

1974 • 9 citations

Perturbation theory for configuration interaction wavefunctions

1971 • 9 citations

On the Hartree-Fock equations for helium with non-orthogonal orbitals

1968 • 9 citations

Electron Correlation for the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn…

1971 • 8 citations

Forbidden lines in spectra of the solar chromosphere and corona

1973 • 8 citations

Radiative lifetimes for singly and doubly ionized boron

1973 • 8 citations

Single-Configuration Open-Shell Calculations for the Boron Isoelectronic Sequence

1966 • 8 citations

Multiconfiguration Hartree-Fock calculations. II. Calculation of the lowest 3 P, 1 D, and 1 S states of the carbon atom.

1969 • 8 citations

[Fe I] Lines: Their Transition Probabilities and Occurrences in Sunspots

1971 • 8 citations

Ab initio calculation of energy levels and transition probabilities in the spectra of rare gases. II. Ne I

1975 • 8 citations

Vector coupling coefficients for complex atoms

1970 • 8 citations

Absolute multiplet strengths for 4L-4L′ transitions of the helium sequence

1969 • 7 citations

A perturbation treatment of the hartree-fock equations for the ground states of 3- to 10-electron atoms

1971 • 7 citations

Helium states II. Perturbation treatment of the ground state using the coordinates r_&lt; and r_&gt;

1968 • 7 citations

Relativistic and non-relativistic configuration interaction calculations for atoms having a closed core and two valence spin-orbitals

1969 • 7 citations

Spin-Extended Wave Function for Atomic Sodium

1968 • 7 citations

Pitfalls of Configuration Interaction

1973 • 7 citations

Perturbation calculations on the split-shell wavefunctions of two-electron atoms

1973 • 7 citations

The perturbation theory of the extended Hartree–Fock approximation for two‐electron atoms

1967 • 7 citations

General Remainder Theorem

1968 • 6 citations

Semiempirical potentials for some atomic cores: C+4, N+5, O+6, Mg+2, Al+3, Si+4, Ca+2, Ba+2

1969 • 6 citations

Variational-Bound Methods for Auto-Ionization States. II. Three-Electron Atoms

1971 • 6 citations

Numerical extended-Hartree-Fock calculation of the magnetic hyperfine structure of lithium

1973 • 6 citations

Oscillator strengths for selected 3dn4s−3dn4p transitions of the iron-group elements

1974 • 6 citations

Variational calculations for the three-electron systems He- and Be+

1968 • 6 citations

Extended average energy perturbation calculation of the 2s2 and 2p2 1S resonance state energies of two-electron atoms

1973 • 6 citations

Electric dipole transitions in the carbon isoelectronic sequence calculated with symmetric states obtained from superposition of configurations

1973 • 6 citations

Hyperfine structure of 13C in the sp3 (5S) state

1972 • 5 citations

Hartree-Fock multiplet strengths of 1s24l 2L-1s24l&amp;prime; 2L&amp;prime; transitions of the lithium isoelectronic sequence

1969 • 5 citations

Transition probability and oscillator strength by perturbation theory: 1s3p^1,3P‐1s3d^1,3D Transition in helium isoelectronic sequence

1970 • 5 citations

Perturbation Treatment of the Helium Ground State with Correlation in Zeroth Order

1968 • 5 citations

Correlation Energy of Two-Electron Systems

1964 • 4 citations

Fractional parentage coefficients for equivalent f shell electrons

1974 • 4 citations

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>P</mml:mi></mml:math>Autoionization States of He and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

1972 • 4 citations

Variational calculations on Feshbach-type resonance states of three-electron atoms

1973 • 4 citations

Hartree-Fock Calculations of Autoionization States

1970 • 4 citations

Reduced matrix elements of summations of one-particle tensor products

1975 • 3 citations

Hyperfine Splitting of the Ground State of Lithium-like Ions

1963 • 3 citations

A perturbation treatment for two-electron atomic systems with correlation in zero order

1969 • 3 citations

Z-1/2 expansion of the unrestricted Hartree-Fock equations for the ground state of lithium

1968 • 3 citations

Some theoretical investigations on singly excited states of two-electron systems

1970 • 2 citations

Perturbation Theory in the Hartree-Fok Method

1965 • 2 citations

Helium states

1967 • 2 citations

Absolute multiplet strengths of 4²S→4²P→4²D transitions of sodium sequence

1971 • 1 citations

The first-order Hartree-Fock equations for the nsms¹S states of helium-like ions

1973 • 1 citations

The spin density of the ns²S states in the lithium isoelectronic sequence

1973 • 1 citations