Variational close-coupling calculation for [ital D]-wave positron-hydrogen scattering

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.3386· OSTI ID:6037551

Gien, T T ^[1]; Liu, G G ^[2]

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1. Department of Physics, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X7 (Canada)
2. Department of Physics, East China Institute of Chemical Technologies, Shanghai 200237 (China)

The [ital D]-wave ([ital L]=2) phase shifts and the [ital D]-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 an 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 2[ital p]--Ps 1[ital s], and H 1[ital s]--H 2[ital s]--H 2[ital [bar p]]--Ps 1[ital s]) have been considered for the calculation. The algebraic approach again proved to be convenient in handling the positronium-formation channel in the close-coupling calculation, even for a higher-wave scattering.

• OSTI ID: 6037551
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 48:4; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664500* -- Special Atoms & Molecules-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CALCULATION METHODS
COLLISIONS
CROSS SECTIONS
D WAVES
ELASTIC SCATTERING
ELEMENTS
ENERGY
HYDROGEN
INELASTIC SCATTERING
NONMETALS
PARTIAL WAVES
PHASE SHIFT
POSITRON COLLISIONS
POSITRON-ATOM COLLISIONS
POSITRONIUM
SCATTERING
THRESHOLD ENERGY
VARIATIONAL METHODS