Variational close-coupling calculation for positron-hydrogen scattering at low energies

Journal Article · Thu Oct 01 00:00:00 EDT 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.46.3918· OSTI ID:7198414

Liu, G; Gien, T T ^[1]

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1. Department of Physics, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X7 (Canada)

The {ital S}-wave ({ital L}=0) and {ital P}-wave ({ital L}=1) phase shifts and the {ital S}-wave and {ital P}-wave elastic and positronium-formation cross sections for positron scattering from hydrogen at energies below the first excitation threshold are calculated in the close-coupling approximation, using the algebraic variational method. Four target-state coupling schemes (H 1{ital s}--Ps 1{ital s}, H 1{ital s}-- H 2{ital s}--Ps 1{ital s}, H 1{ital s}--H 2{ital s}--H 2p--Ps 1{ital s}, and H 1{ital s}--H 2{ital s}--H 2{bar p}--Ps 1{ital s}) have been considered for the calculation. It is found that the H 2{ital {bar p}} target channel significantly affects the {ital S}-wave positronium-formation cross sections.

• OSTI ID: 7198414
• Journal Information: Physical Review A. General Physics; (United States), Vol. 46:7; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
HYDROGEN
POSITRON-ATOM COLLISIONS
CROSS SECTIONS
ELASTIC SCATTERING
POSITRONIUM
VARIATIONAL METHODS
ATOM COLLISIONS
COLLISIONS
ELEMENTS
NONMETALS
POSITRON COLLISIONS
SCATTERING
664500* - Special Atoms & Molecules- (1992-)