Electron transfer in collisions of He/sup + +/ ions with H atoms at /sup 4/He/sup + +/ impact energies of 0. 1-20. 0 keV

Journal Article · Sun Jan 01 04:00:00 EST 1978 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.17.66· OSTI ID:5167848

Winter, T G; Lane, N F

Total cross sections have been calculated for electron transfer into all states of He/sup +/ during collisions of He/sup + +/ ions with H atoms at /sup 4/He/sup + +/ energies from 0.1 to 20.0 keV. The coupled molecular-state approximation that is used incorporates in the basis up to 20 states 1ssigma, 2ssigma,...,4fphi of the frozen HeH/sup + +/ molecule. Convergence of cross sections with respect to the size of the bound-state basis is studied; at 8 keV, the eight states 1ssigma, 2psigma, 3dsigma, 4fsigma, 2p..pi.., 3d..pi.., 4f..pi.., and 3psigma of the 20 states considered have been found sufficient to determine the 20-state cross section to within a few percent. The nuclei are assumed to follow classical paths, some estimate being made of the effect of nonrectilinear motion at the lower energies. A comparison is made with experimental results, and agreement with most of the recent experimental results is found to be excellent down to about 8 keV; at lower energies, the theoretical cross section falls off rapidly with decreasing energy, in contrast to the single early low-energy measurement.

• Research Organization: Physics Department, Pennsylvania State University, Wilkes-Barre Campus, Wilkes-Barre, Pennsylvania 18708
• OSTI ID: 5167848
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 17:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
BEAMS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
CRYOGENIC FLUIDS
ELECTRON TRANSFER
ELEMENTS
ENERGY RANGE
FLUIDS
HELIUM IONS
HYDROGEN
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
MULTICHARGED IONS
NONMETALS
TOTAL CROSS SECTIONS