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Calculation of differential cross sections for proton-impact excitation of the n = 2 levels of helium

Journal Article · · Phys. Rev. A; (United States)
Differential cross sections for the proton-impact 1/sup 1/S..-->..2/sup 1/S and 1/sup 1/S..-->..2/sup 1/P excitations of atomic helium are calculated at 25-, 50-, and 100-keV proton energies using the Glauber approximation. The sum of the results are compared with an earlier multistate eikonal calculation as well as with a very recent measurement. The angular dependence of the cross sections predicted by the Glauber theory is in reasonable agreement with the eikonal results and the observed data.
Research Organization:
Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700032, India
OSTI ID:
6109412
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 24:5; ISSN PLRAA
Country of Publication:
United States
Language:
English