Positron-hydrogen collisions at low energies

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.55.256· OSTI ID:432515

Kuang, Y R; Gien, T T ^[1]

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1. Department of Physics, Memorial University of Newfoundland, St. John`s, Newfoundland, A1B3X7 (CANADA)

The Harris-Nesbet algebraic method was used to carry out a large coupled-state calculation of e{sup +}-H scattering at energies below the first excitation threshold of hydrogen. The six-state (1s,2s,2p H{endash}1s,2s,2p Ps) coupling scheme was extended to include an adequate number of short-ranged functions of both hydrogenic and positroniumic types and the H 3{bar p} pseudostate. Phase shifts and cross sections of partial waves from L=0 to 6 were obtained for e{sup +}-H (1s) scattering as well as for Ps(1s)-p scattering. Our results are to be compared with those obtained by other research groups with some large-scale calculations employing, however, different numerical methods of approach. Our results agree excellently with the values calculated with a variational method by Bhatia {ital et al.} and by Humberston and co-workers and with the 21-state close-coupling approximation by Mitroy and co-workers. {copyright} {ital 1996} {ital The American Physical Society}

• OSTI ID: 432515
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 1 Vol. 55; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANALYTICAL SOLUTION
COUPLED CHANNEL BORN APPROXIMATION
CROSS SECTIONS
EV RANGE 01-10
HYDROGEN
PARTIAL WAVES
PHASE SHIFT
POSITRON-ATOM COLLISIONS
POSITRONIUM
POSITRONS