IONIZATION AND SIMULTANEOUS EXCITATION OF HELIUM-ATOMS BY ELECTRON-IMPACT

Authors
RAEKER A BARTSCHAT K REID RHG
Citation
A. Raeker et al., IONIZATION AND SIMULTANEOUS EXCITATION OF HELIUM-ATOMS BY ELECTRON-IMPACT, Journal of physics. B, Atomic molecular and optical physics, 27(14), 1994, pp. 3129-3138
Citations number
15
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Optics
Journal title
Journal of physics. B, Atomic molecular and optical physics → ACNP
ISSN journal
09534075
Volume
27
Issue
14
Year of publication
1994
Pages
3129 - 3138
Database
ISI
SICI code
0953-4075(1994)27:14<3129:IASEOH>2.0.ZU;2-O
Abstract
Total and single differential cross sections for electron impact ioniz ation of helium are calculated within the R-matrix method. In addition to ionization of ground state atoms He (1s2) 1S, we consider the init ial metastable states He (1s2s) 1S and He (1s2S) 3S for incident proje ctile energies ranging from threshold to 350 eV. Our calculations incl ude the processes which leave the residual ion in an excited state He (nl) up to n = 3. The results are compared with experiments and other theoretical data.