Electron detachment in low-energy H/sup -/(D/sup -/)-Na collisions

Journal Article · Thu Sep 01 04:00:00 EDT 1988 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.38.2284· OSTI ID:7124893

Gauyacq, J P; Wang, Y; Champion, R L; Doverspike, L D

The contribution to electron detachment in low-energy H/sup -/(D/sup -/)-Na collisions due to a direct transition from the bound ground state of (HNa)/sup -/ to the (HNa+e/sup -/) continuum is studied in an effective-range approximation, based on ab initio calculations. Neutralization of H/sup -/ in collisions with Na atoms is shown to be dominated by this direct detachment process at low collision energies. At higher collision energies, charge transfer to (H+Na/sup -/) and detachment via charge transfer (previously studied by R. E. Olson and B. J. Liu (J. Chem. Phys. 73, 2817 (1980))) become the dominant H/sup -/ neutralization mechanisms. These theoretical results are compared with the experimental data of Y. Wang, R. L. Champion, and L. D. Doverspike (Phys. Rev. A 35, 1503 (1987)). A new calibration of these measurements is proposed, based on a comparison with previous absolute measurements at higher energies by A. M. Howald, L. W. Anderson, and C. C. Lin (Phys. Rev. A 24, 44 (1981)).

• Research Organization: Laboratoire des Collisions Atomiques et Moleculaires, Batiment 351, Universite de Paris--Sud (Paris XI), 91405 Orsay Cedex, France
• OSTI ID: 7124893
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 38:5; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ANIONS
ATOM COLLISIONS
BOUND STATE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DEUTERIUM IONS
ELECTRON DETACHMENT
ELEMENTS
ENERGY DEPENDENCE
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
ISOTOPE EFFECTS
METALS
MOLECULAR IONS
SODIUM