The 2¹S and 2¹P excitations of helium by proton and electron impact

The polarization of atomic line radiation excited by electron impact

1958 • 573 citations

Inelastic Collisions between Heavy Particles I: Excitation and Ionization of Hydrogen Atoms in Fast Encounters with Protons and with other Hydrogen Atoms

1953 • 453 citations

Correlation Effects in Atoms. I. Helium

1966 • 251 citations

Power Series Representation of Generalized Oscillator Strengths

1965 • 222 citations

Generalized Oscillator Strengths of the Helium Atom. I

1968 • 184 citations

Tests of Born Approximations: Differential and Total<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>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>2</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</mml:mi…

1968 • 150 citations

Excitation of helium by 0.05–6 keV electrons and polarization of the resulting radiation

1969 • 136 citations

Absolute Measurements of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi>P</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi>P</mml:mi></mml:math>Electron Excitation …

1967 • 89 citations

Accurate first Born approximation cross sections for the excitation of helium by fast electrons

1969 • 83 citations

Heavy-Particle Energy-Loss Spectrometry: Inelastic Cross Sections for Protons Incident upon Helium

1969 • 80 citations

Electron capture by fast protons in helium

1967 • 54 citations

The singlet S states of the helium isoelectronic sequence

1967 • 53 citations

Coupled-State Calculations of Proton-Helium Scattering

1969 • 51 citations

The 2s and 2p excitations of hydrogen by proton and helium-ion impact

1969 • 39 citations

The first Born approximation for collisions between heavy particles

1966 • 38 citations

Impact-Parameter Treatment of Hydrogen-Hydrogen Excitation Collisions. I. Two-State Approximation

1969 • 36 citations

Accurate first Born approximation cross sections for the excitation of helium by fast protons

1968 • 35 citations

Variational Atomic Wave Functions

1939 • 31 citations

Multi-state impact-parameter treatment of hydrogen-helium excitation collisions

1969 • 29 citations

Cooling of Interstellar Gas.

1964 • 25 citations

Excitation of Atomic Oxygen and Carbon by Collisions with Hydrogen Atoms

1967 • 14 citations