Coupled-Sturmian and perturbative treatments of electron transfer and ionization in high-energy p -He sup + collisions

Journal Article · Fri Jan 31 23:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.45.1562· OSTI ID:7234467

Winter, T G ^[1]; Alston, S G ^[2]

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1. Department of Physics, Pennsylvania State University, Wilkes-Barre Campus, Lehman, Pennsylvania 18627 (United States) Department of Physics, Rice University, Houston, Texas 77251 (United States)
2. Department of Physics, Pennsylvania State University, Wilkes-Barre Campus, Lehman, Pennsylvania 18627 (United States)

Cross sections have been determined for electron transfer and ionization in collisions between protons and He{sup +} ions at proton energies from several hundred kilo-electron-volts to 2 MeV. A coupled-Sturmian approach is taken, extending the work of Winter (Phys. Rev. A 35, 3799 (1987)) and Stodden {ital et} {ital al}. (Phys. Rev. A 41, 1281 (1990)) to high energies where perturbative approaches are expected to be valid. An explicit connection is made with the first-order Born approximation for ionization and the impulse version of the distorted, strong-potential Born approximation for electron transfer. The capture cross section is shown to be affected by the presence of target basis functions of positive energy near {ital v}{sup 2}/2, corresponding to the Thomas mechanism.

• OSTI ID: 7234467
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 45:3; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
BARYONS
BORN APPROXIMATION
CAPTURE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELECTRON TRANSFER
ELEMENTARY PARTICLES
FERMIONS
FUNCTIONS
HADRONS
HELIUM IONS
IMPULSE APPROXIMATION
ION COLLISIONS
ION-ION COLLISIONS
IONIZATION
IONS
LAGUERRE POLYNOMIALS
MATRIX ELEMENTS
NUCLEONS
NUMERICAL SOLUTION
PERTURBATION THEORY
POLYNOMIALS
PROTONS