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Electron-impact excitation of n = 2 levels of helium at intermediate energies

Electron-impact excitation of n = 2 levels of helium at intermediate energies Five-state close-coupling equations for electron-helium scattering are solved in the energy region from 30 to 100 eV. Integral and differential cross sections for excitation of the ground state to the n = 2 states 2 S 3 , 2 S 1 , 2 P 0 3 , and 2 P 0 1 are presented. Calculated shapes of differential cross sections versus angle for various energies are in fair agreement with measurements, but the magnitudes of the cross sections are overestimated. Allowance for coupling between 2 S 3 and 2 P 0 3 brings calculated differential cross sections into good quantitative agreement with experiment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review A American Physical Society (APS)

Electron-impact excitation of n = 2 levels of helium at intermediate energies

Physical Review A , Volume 19 (5) – May 1, 1979
11 pages

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1979 The American Physical Society
ISSN
1094-1622
DOI
10.1103/PhysRevA.19.1841
Publisher site
See Article on Publisher Site

Abstract

Five-state close-coupling equations for electron-helium scattering are solved in the energy region from 30 to 100 eV. Integral and differential cross sections for excitation of the ground state to the n = 2 states 2 S 3 , 2 S 1 , 2 P 0 3 , and 2 P 0 1 are presented. Calculated shapes of differential cross sections versus angle for various energies are in fair agreement with measurements, but the magnitudes of the cross sections are overestimated. Allowance for coupling between 2 S 3 and 2 P 0 3 brings calculated differential cross sections into good quantitative agreement with experiment.

Journal

Physical Review AAmerican Physical Society (APS)

Published: May 1, 1979

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