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Charge transfer in collisions of atomic hydrogen with O/sup 8 +/, He/sup + +/, and H/sup +/

Journal Article · · Phys. Rev., A; (United States)
;
The charge-transfer process O/sup 8 +/ + H(1s) ..-->.. O/sup 7 +/ + H/sup +/ is considered for O/sup 8 +/ impact energies from 0.025 to 200 keV/amu, using the atomic base S matrix formulation represented by time-dependent bases which denote moving atomic orbitals. In the evaluation of the S matrix, models of two extreme types, the unitarized model and the absorption model, are introduced. The numerical results show that there is only a small difference between the cross sections obtained using the respective models for impact energies above 0.5 keV/amu, while the cross section due to the unitarized model becomes smaller than one-half of that obtained with the absorption model at an impact energy of 0.05 keV/amu. The data are also compared with other calculations of the same process. For the investigation of the validity of our formula, the unitarized formula is also applied to the processes H/sup +/ + H(1s) ..-->.. H + H/sup +/ and He/sup 2 +/ + H(1s) ..-->.. He/sup +/ + H/sup +/. The results are in good agreement with the experimental data.
Research Organization:
Tokai Research Establishment, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki 319-11, Japan
OSTI ID:
6578826
Journal Information:
Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Journal Issue: 5 Vol. 18:5; ISSN PLRAA
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOMIC IONS
CATIONS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
CRYOGENIC FLUIDS
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 10-100
FLUIDS
HELIUM IONS
HYDROGEN
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
MATRICES
MULTICHARGED IONS
NONMETALS
OXYGEN IONS
S MATRIX