Single-electron detachment cross sections in H{sup {minus}}+Ar

Journal Article · Sat May 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:281413

Kvale, T J; Sen, A; Matulioniene, A S.R.; Fang, X ^[1]

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1. Univ. of Toledo, OH (United States)

Measurements of absolute cross sections for the single electron detachment ({sigma}{sub -1,0}) in collisions between H{sup -} and Ar in the energy range 5-50 keV are reported. A well-collimated H{sup -} ion beam is directed toward an Ar gas target and all three of the exiting scattered beam components (i.e. H{sup 0}, H{sup +} and H{sup -}) are measured simultaneously. Using the closure relation among the collision beam components, (H{sup 0}, H{sup -} and H{sup +}) the neutral detection efficiencies are determined at each energy and thereby we are able to report absolute single detachment cross sections. The single detachment cross sections {sigma}{sub -1,0} exhibit a broad maximum with a value of 1.78 x 10{sup -15} cm{sup 2} at an impact energy of 25 keV.

• DOE Contract Number: FG05-88ER13971
• OSTI ID: 281413
• Report Number(s): CONF-9305421--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ARGON
CROSS SECTIONS
ELECTRON DETACHMENT
ENERGY DEPENDENCE
EXPERIMENTAL DATA
HYDROGEN IONS 1 MINUS
ION-ATOM COLLISIONS