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Title: Multielectron processes in 10-keV/u Ar[sup [ital q]+] (5[le][ital q][le]17) on Ar collisions

Abstract

We have used time-of-flight coincidence techniques to study multielectron reactions in 10-keV/u ([ital v]=0.632 a.u.) Ar[sup [ital q]+] (5[le][ital q][le]17) on Ar collisions. Absolute cross sections for total charge-transfer ([sigma][sub [ital q]]), projectile charge-change ([sigma][sub [ital q],][ital q][sub [minus][ital k]]), recoil production ([sigma][sub [ital q]][sup [ital i]]), and phenomenological cross sections ([sigma][sub [ital q],][ital q][sub [minus][ital k]][sup [ital i]]) have been obtained by normalizing to cross sections reported in the literature [H. Klinger, A. Mueller, and E. Salzborn, J. Phys. B 8, 230 (1975)]. The data have been used to critically test the predictions of the molecular classical overbarrier model (MCBM) [A. Niehaus, J. Phys. B 19, 2925 (1986)] and rather impressive agreements have been obtained. In particular, the predictions of target outer-shell excitation seem to have supporting evidence in this set of data. A stabilization scheme for the multiply excited projectile following charge transfer is proposed to complement the MCBM predictions and the gross features of the final reaction products are fairly accounted for. In addition, enhanced electron loss from the projectile-target system is observed in hard collisions for low-charged projectiles ([ital q][le]8) and is attributed to inner-shell excitation via molecular-orbital promotion.

Authors:
; ; ;  [1]
  1. J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506-2604 (United States)
Publication Date:
OSTI Identifier:
5073131
Resource Type:
Journal Article
Journal Name:
Physical Review A; (United States)
Additional Journal Information:
Journal Volume: 49:5; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ARGON; ION-ATOM COLLISIONS; CHARGE EXCHANGE; COINCIDENCE METHODS; CROSS SECTIONS; KEV RANGE; MULTICHARGED IONS; RECOILS; TIME-OF-FLIGHT METHOD; ATOM COLLISIONS; CHARGED PARTICLES; COLLISIONS; COUNTING TECHNIQUES; ELEMENTS; ENERGY RANGE; FLUIDS; GASES; ION COLLISIONS; IONS; NONMETALS; RARE GASES; 664300* - Atomic & Molecular Physics- Collision Phenomena- (1992-)

Citation Formats

Ali, R, Cocke, C L, Raphaelian, M L.A., and Stockli, M. Multielectron processes in 10-keV/u Ar[sup [ital q]+] (5[le][ital q][le]17) on Ar collisions. United States: N. p., 1994. Web. doi:10.1103/PhysRevA.49.3586.
Ali, R, Cocke, C L, Raphaelian, M L.A., & Stockli, M. Multielectron processes in 10-keV/u Ar[sup [ital q]+] (5[le][ital q][le]17) on Ar collisions. United States. https://doi.org/10.1103/PhysRevA.49.3586
Ali, R, Cocke, C L, Raphaelian, M L.A., and Stockli, M. Sun . "Multielectron processes in 10-keV/u Ar[sup [ital q]+] (5[le][ital q][le]17) on Ar collisions". United States. https://doi.org/10.1103/PhysRevA.49.3586.
@article{osti_5073131,
title = {Multielectron processes in 10-keV/u Ar[sup [ital q]+] (5[le][ital q][le]17) on Ar collisions},
author = {Ali, R and Cocke, C L and Raphaelian, M L.A. and Stockli, M},
abstractNote = {We have used time-of-flight coincidence techniques to study multielectron reactions in 10-keV/u ([ital v]=0.632 a.u.) Ar[sup [ital q]+] (5[le][ital q][le]17) on Ar collisions. Absolute cross sections for total charge-transfer ([sigma][sub [ital q]]), projectile charge-change ([sigma][sub [ital q],][ital q][sub [minus][ital k]]), recoil production ([sigma][sub [ital q]][sup [ital i]]), and phenomenological cross sections ([sigma][sub [ital q],][ital q][sub [minus][ital k]][sup [ital i]]) have been obtained by normalizing to cross sections reported in the literature [H. Klinger, A. Mueller, and E. Salzborn, J. Phys. B 8, 230 (1975)]. The data have been used to critically test the predictions of the molecular classical overbarrier model (MCBM) [A. Niehaus, J. Phys. B 19, 2925 (1986)] and rather impressive agreements have been obtained. In particular, the predictions of target outer-shell excitation seem to have supporting evidence in this set of data. A stabilization scheme for the multiply excited projectile following charge transfer is proposed to complement the MCBM predictions and the gross features of the final reaction products are fairly accounted for. In addition, enhanced electron loss from the projectile-target system is observed in hard collisions for low-charged projectiles ([ital q][le]8) and is attributed to inner-shell excitation via molecular-orbital promotion.},
doi = {10.1103/PhysRevA.49.3586},
url = {https://www.osti.gov/biblio/5073131}, journal = {Physical Review A; (United States)},
issn = {1050-2947},
number = ,
volume = 49:5,
place = {United States},
year = {1994},
month = {5}
}