Sturmian treatment of excitation and ionization in high-energy proton-helium collisions
Journal Article
·
· Physical Review, A; (USA)
- Department of Physics, Pennsylvania State University, Wilkes-Barre Campus, Lehman, Pennsylvania 18627 (US) Institute for Theoretical Atomic and Molecular Physics, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138
Cross sections have been calculated for excitation of the (2{ital s}{sup 2}) {sup 1}{ital S}, 2 {sup 1}{ital S}, and 2 {sup 1}{ital P} states and ionization of helium by MeV-energy protons. The sensitivity to couplings among these excitation and ionization channels is studied using the Sturmian-pseudostate approach applied previously by Winter (Phys. Rev. A 35, 3799 (1987)) to one-electron systems. The inclusion of many states greatly lowers the 2{ital s}{sup 2} cross section and brings it closer to the recent experimental result of Giese {ital et} {ital al}. (Phys. Rev. A 42, 1231 (1990)).
- OSTI ID:
- 5797216
- Journal Information:
- Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 43:9; ISSN 1050-2947; 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
CATIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
HELIUM
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
MEV RANGE
NONMETALS
RARE GASES
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CATIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
HELIUM
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
MEV RANGE
NONMETALS
RARE GASES