Absolute measurement of total electron-impact cross sections to singlet and triplet levels in helium

Atomic and molecular processes

1962 • 1,593 citations

Advances in atomic and molecular physics

1969 • 637 citations

Electron Impact Excitation of Atoms

1968 • 407 citations

Absolute Electron Excitation Cross Sections of Helium

1964 • 190 citations

Generalized Oscillator Strengths of the Helium Atom. I

1968 • 184 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

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

1969 • 136 citations

Effect of the Imprisonment of Resonance Radiation on Excitation Experiments

1958 • 118 citations

Vacuum ultraviolet measurements of the electron impact excitation of helium

1972 • 106 citations

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

1969 • 83 citations

New Process of Excitation Transfer in Helium

1961 • 72 citations

Elimination of Polarization Corrections from Optical Excitation-Function Measurements

1969 • 68 citations

Generalized Oscillator Strengths of the Helium Atom. III. Transitions from the Ground State to the<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>D</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>4</mml:mn><mml:mrow…

1969 • 46 citations

Excitation Transfer in Helium

1967 • 45 citations

The polarization of electron impact radiation in helium

1963 • 41 citations

Excitation of the<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>D</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>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>4</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>F</mml:…

1969 • 30 citations

Micrometer U-Tube Manometers for Medium-Vacuum Measurements

1967 • 27 citations

Distribution of Excitation Transfer in Helium

1972 • 25 citations

"Polarization-Free" Vacuum-Ultraviolet Excitation of Helium by Electrons

1971 • 12 citations

Exchange Excitation in Helium: Excitation Functions for the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>4</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>3</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>P</…

1971 • 11 citations

A Standard for Extremely Low Values of Spectral Irradiance

1965 • 10 citations

Polarization of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>λ</mml:mi><mml:mo>=</mml:mo><mml:mn>5876</mml:mn><mml:mn /></mml:math>Å and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>λ</mml:mi><mml:mo>=</mml:mo><mml:mn>6679</mml:mn><mml:mn /></mml:math>Å Lines in Helium Excited by Electrons

1962 • 8 citations