Electron detachment and charge transfer for collisions of O[sup [minus]] and S[sup [minus]] with H

Journal Article · Sat May 01 04:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.47.3796· OSTI ID:6873191

Fedchak, J A; Huels, M A; Doverspike, L D; Champion, R L ^[1]

---

1. Department of Physics, College of William and Mary, Williamsburg, Virginia 23185 (United States)

Total electron-detachment and charge-transfer cross sections for collisions of O[sup [minus]] and S[sup [minus]] with atomic hydrogen have been measured for relative collision energies [ital E] ranging from 0.1 to 15 eV. At low collision energies these results are fairly well described by a simple Langevin orbiting model and, in the case of O[sup [minus]] (where intermolecular potentials are available), a simple curve-crossing model is also in reasonable accord with the measurements. Neither O[sup [minus]]+H nor S[sup [minus]]+H displays an energetic barrier to associative detachment. Charge-transfer cross sections are small for both systems for the range of collision energies sampled in the experiment. Associative detachment cross sections are also reported for S[sup [minus]]+H[sub 2] for [ital E][lt]2 eV; the results appear to resolve an apparent discrepancy between previous measurements.

• OSTI ID: 6873191
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 47:5; ISSN PLRAAN; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
ATOM COLLISIONS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRON DETACHMENT
ELEMENTS
ENERGY RANGE
EV RANGE
HYDROGEN
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
NONMETALS
OXYGEN IONS
SULFUR IONS