Calculation of the total and total ionization cross sections for positron scattering on atomic hydrogen

I. Bray; A.T. Stelbovics

doi:10.1103/PhysRevA.49.R2224

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Calculation of the total and total ionization cross sections for positron scattering on atomic hydrogen

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Calculation of the total and total ionization cross sections for positron scattering on atomic hydrogen

I. Bray and A.T. Stelbovics

Physical Review A - Atomic, Molecular, and Optical Physics, Vol.49(4), pp.R2224-R2226

1994

DOI: https://doi.org/10.1103/PhysRevA.49.R2224

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Abstract

The total and total ionization cross sections for positron scattering on atomic hydrogen are calculated by applying the convergent-close-coupling method to the model where positronium-formation channels are omitted. This model accurately describes the physics of the scattering whenever the positronium formation cross section is negligible, in particular, above 100 eV for this system. The total ionization cross section results in this energy region are in excellent agreement with the recent measurements of Jones et al. [J. Phys. B 26, L483 (1993)], and so lie below the earlier measurements of Spicher [Phys. Rev. Lett. 64, 1019 (1990)], and the recent calculations of Acacia et al. [Phys. Rev. Lett. (to be published)]. The total cross section is in very good agreement with the recent measurements of Zhou et al. (unpublished) down to 30 eV.

Details

Title: Calculation of the total and total ionization cross sections for positron scattering on atomic hydrogen
Authors/Creators: I. Bray (Author/Creator) - Flinders University
A.T. Stelbovics (Author/Creator) - Murdoch University
Publication Details: Physical Review A - Atomic, Molecular, and Optical Physics, Vol.49(4), pp.R2224-R2226
Publisher: The American Physical Society
Identifiers: 991005540829107891
Copyright: © 1994 The American Physical Society.
Murdoch Affiliation: School of Mathematical and Physical Sciences; Centre for Atomic, Molecular and Surface Physics
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 2 Chemistry; 2.15 Physical Chemistry; 2.15.664 Dissociative Electron Attachment
Web Of Science research areas: Optics; Physics, Atomic, Molecular & Chemical
ESI research areas: Physics