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Discussion of electron capture theories for ion-atom collisions at high energies

Abstract

Different theories of charge exchange processes in ion-atom collisions at high energies for the H/sup +/-H system are considered. Large discrepancies are found in the differential cross sections obtained from the various models. The validity of Dettmann's peaking approximation is analysed by comparison with exact values for the first- and second-order Oppenheimer-Brinkman-Kramers (OBK 1 and OBK 2) theories. It is also shown that for energies up to a few MeV the OBK 2 differential cross sections are higher than the corresponding OBK 1 ones. Total cross sections in the OBK 2 approximation are given.
Authors:
Miraglia, J E; [1]  Piacentini, R D; [2]  Rivarola, R D; [3]  Salin, A [4] 
  1. Instituto de Astronomia y Fisica del Espacio, Buenos Aires (Argentina)
  2. Consejo Nacional de Investigaciones Cientificas y Tecnicas, Buenos Aires (Argentina)
  3. Rosario Univ. Nacional (Argentina). Dept. de Fisica
  4. Bordeaux-1 Univ., 33 - Talence (France)
Publication Date:
Mar 14, 1981
Product Type:
Journal Article
Reference Number:
AIX-12-608879; EDB-82-024166
Resource Relation:
Journal Name: J. Phys. B; (United Kingdom); Journal Volume: 14:5
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; HYDROGEN; ION-ATOM COLLISIONS; HYDROGEN IONS 1 MINUS; CHARGE EXCHANGE; BORN-OPPENHEIMER APPROXIMATION; BRINKMAN-KRAMERS APPROXIMATION; COMPARATIVE EVALUATIONS; DIFFERENTIAL CROSS SECTIONS; DWBA; ELECTRON CAPTURE; ENERGY DEPENDENCE; KEV RANGE 100-1000; MEV RANGE 01-10; PROTONS; THEORETICAL DATA; TOTAL CROSS SECTIONS; ANIONS; ATOM COLLISIONS; BARYONS; BORN APPROXIMATION; CAPTURE; CHARGED PARTICLES; COLLISIONS; CROSS SECTIONS; DATA; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; FERMIONS; HADRONS; HYDROGEN IONS; INFORMATION; ION COLLISIONS; IONS; KEV RANGE; MEV RANGE; NONMETALS; NUCLEONS; NUMERICAL DATA; 640302* - Atomic, Molecular & Chemical Physics- Atomic & Molecular Properties & Theory; 640304 - Atomic, Molecular & Chemical Physics- Collision Phenomena
OSTI ID:
5935924
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JPAMA
Submitting Site:
INIS
Size:
Pages: L197-L202
Announcement Date:
Jul 01, 1981

Citation Formats

Miraglia, J E, Piacentini, R D, Rivarola, R D, and Salin, A. Discussion of electron capture theories for ion-atom collisions at high energies. United Kingdom: N. p., 1981. Web. doi:10.1088/0022-3700/14/5/008.
Miraglia, J E, Piacentini, R D, Rivarola, R D, & Salin, A. Discussion of electron capture theories for ion-atom collisions at high energies. United Kingdom. doi:10.1088/0022-3700/14/5/008.
Miraglia, J E, Piacentini, R D, Rivarola, R D, and Salin, A. 1981. "Discussion of electron capture theories for ion-atom collisions at high energies." United Kingdom. doi:10.1088/0022-3700/14/5/008. https://www.osti.gov/servlets/purl/10.1088/0022-3700/14/5/008.
@misc{etde_5935924,
title = {Discussion of electron capture theories for ion-atom collisions at high energies}
author = {Miraglia, J E, Piacentini, R D, Rivarola, R D, and Salin, A}
abstractNote = {Different theories of charge exchange processes in ion-atom collisions at high energies for the H/sup +/-H system are considered. Large discrepancies are found in the differential cross sections obtained from the various models. The validity of Dettmann's peaking approximation is analysed by comparison with exact values for the first- and second-order Oppenheimer-Brinkman-Kramers (OBK 1 and OBK 2) theories. It is also shown that for energies up to a few MeV the OBK 2 differential cross sections are higher than the corresponding OBK 1 ones. Total cross sections in the OBK 2 approximation are given.}
doi = {10.1088/0022-3700/14/5/008}
journal = {J. Phys. B; (United Kingdom)}
volume = {14:5}
journal type = {AC}
place = {United Kingdom}
year = {1981}
month = {Mar}
}