THEORETICAL THRESHOLD CROSS-SECTION OF ELECTRON-IMPACT IONIZATION OF THE HYDROGEN-ATOM

Authors
CHANG JC WEI CM KUO TY HUANG KN
Citation
Jc. Chang et al., THEORETICAL THRESHOLD CROSS-SECTION OF ELECTRON-IMPACT IONIZATION OF THE HYDROGEN-ATOM, Journal of physics. B, Atomic molecular and optical physics, 27(19), 1994, pp. 4715-4733
Citations number
27
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
19
Year of publication
1994
Pages
4715 - 4733
Database
ISI
SICI code
0953-4075(1994)27:19<4715:TTCOEI>2.0.ZU;2-6
Abstract
Single differential and total cross sections of the electron-impact io nization of the hydrogen atom are calculated numerically in the two-po tential distorted-wave approximation for excess energies from 0 to 1 e V. Partial-wave contributions to the cross sections are also investiga ted. The near-threshold cross section is parametrized by the power gam ma and the proportionality constant a(0) for models with various asymp totic charges, and the dependence of a(0) on the asymptotic charge is studied. The validity range of the threshold power law is also discuss ed.