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Convergent close-coupling calculations of low-energy positron-atomic-hydrogen scattering

Technical Report:

Abstract

The convergent close coupling approach developed by the authors is applied to positron scattering from atomic hydrogen below the first excitation threshold. In this approach the multi-channel expansion one-electron states are obtained by diagonalizing the target Hamiltonian in a large Laguerre basis. It is demonstrated that this expansion of the scattering wave function is sufficient to reproduce the very accurate low-energy variational results, provided target states with l{<=} 15 are included in the expansions. 10 refs., 1 tab.
Publication Date:
Jul 01, 1993
Product Type:
Technical Report
Report Number:
ESM-56
Reference Number:
SCA: 664300; PA: AIX-25:004580; EDB-94:016262; ERA-19:005799; NTS-94:014102; SN: 93001121286
Resource Relation:
Other Information: PBD: Jul 1993
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; HYDROGEN; POSITRON-ATOM COLLISIONS; SCATTERING AMPLITUDES; ANALYTICAL SOLUTION; CONVERGENCE; COUPLING; LAGUERRE POLYNOMIALS; MATRICES; PHASE SHIFT; SCATTERING; SERIES EXPANSION; THEORETICAL DATA; THREE-BODY PROBLEM; THRESHOLD ENERGY; WAVE FUNCTIONS; 664300; COLLISION PHENOMENA
Sponsoring Organizations:
Australian Research Council, Canberra, ACT (Australia)
OSTI ID:
10109965
Research Organizations:
Flinders Univ. of South Australia, Adelaide, SA (Australia). Electronic Structure of Materials Centre
Country of Origin:
Australia
Language:
English
Other Identifying Numbers:
Other: ON: DE94609858; TRN: AU9313482004580
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
7 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Bray, I, and Stelbovics, A T. Convergent close-coupling calculations of low-energy positron-atomic-hydrogen scattering. Australia: N. p., 1993. Web.
Bray, I, & Stelbovics, A T. Convergent close-coupling calculations of low-energy positron-atomic-hydrogen scattering. Australia.
Bray, I, and Stelbovics, A T. 1993. "Convergent close-coupling calculations of low-energy positron-atomic-hydrogen scattering." Australia.
@misc{etde_10109965,
title = {Convergent close-coupling calculations of low-energy positron-atomic-hydrogen scattering}
author = {Bray, I, and Stelbovics, A T}
abstractNote = {The convergent close coupling approach developed by the authors is applied to positron scattering from atomic hydrogen below the first excitation threshold. In this approach the multi-channel expansion one-electron states are obtained by diagonalizing the target Hamiltonian in a large Laguerre basis. It is demonstrated that this expansion of the scattering wave function is sufficient to reproduce the very accurate low-energy variational results, provided target states with l{<=} 15 are included in the expansions. 10 refs., 1 tab.}
place = {Australia}
year = {1993}
month = {Jul}
}