Total cross sections for collisions of H/sup -/ and D/sup -/ with various molecules

Journal Article · Tue Feb 01 04:00:00 EST 1983 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.27.785· OSTI ID:6049852

Huq, M S; Doverspike, L D; Champion, R L

Absolute cross sections for electron detachment and charge transfer (or dissociative charge transfer) have been measured for collisions of H/sup -/ and D/sup -/ ions with N/sub 2/, CO, O/sub 2/, CO/sub 2/, and CH/sub 4/. The relative collision energies investigated range from a few eV up to several hundred eV. Electron detachment is found to be the dominant process for all the molecular targets except O/sub 2/ for which charge transfer dominates. Isotope effects are observed in all the cross sections. Isotopic substitution reveals that the detachment cross sections scale with relative collision energy at low collision energies and with relative collision velocity at high collision energies. The general features of the charge-transfer cross section for the O/sub 2/ target are in agreement with the ideas of a simple two-state collision model. The cross sections for charge transfer (or dissociative charge transfer) are found to be small for all targets except O/sub 2/.

• Research Organization: Department of Physics, College of William and Mary, Williamsburg, Virginia 23185
• OSTI ID: 6049852
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 27:2; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKANES
ANIONS
ATOMIC IONS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DEUTERIUM IONS
ELECTRON DETACHMENT
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 10-100
HYDROCARBONS
HYDROGEN IONS
HYDROGEN IONS 1 MINUS
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONS
ISOTOPE EFFECTS
METHANE
MOLECULE COLLISIONS
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS