High-energy cross sections for H/sup -/ ions incident on intermediate and high-Z atoms

Journal Article · Thu Sep 01 04:00:00 EDT 1977 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.16.943· OSTI ID:7289046

Gillespie, G H

The double-closure Born approximation developed in previous work is used to calculate the asymptotic cross sections for electron loss from H/sup -/ ions incident on a variety of atomic targets. Corrections to the closure technique for the next-order terms in heavy-ion--atom cross sections are examined. The corrections for energy conservation are shown to be unimportant, but the Bethe ridge in the inelastic form factors does yield terms which contribute to the next leading order. The total asymptotic electron-loss cross section, and the next-order contribution including the Bethe ridge correction, are calculated using various models for the target atoms obtained from the literature. Comparative results based on Hartree-Fock, configuration-interaction, and relativistic Hartee-Fock wave functions are presented. The results for the electron-loss cross sections for N, O, and Ar target atoms are compared with the available experimental data. Results are also given for parameters which are required for the asymptotic elastic and nondetachment inelastic cross sections. Some comments regarding other applications of these methods are included.

• Research Organization: Physical Dynamics Inc., P. O. Box 556, La Jolla, California 92038
• OSTI ID: 7289046
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 16:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
ARGON
ATOM COLLISIONS
BORN APPROXIMATION
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
CRYOGENIC FLUIDS
ELECTRON DETACHMENT
ELECTRON LOSS
ELEMENTS
FLUIDS
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
NITROGEN
NONMETALS
OXYGEN
RARE GASES