Low-energy positron interactions with krypton

Makochekanwa, C.; Machacek, J.; Jones, A.; Caradonna, P.; Slaughter, D.; McEachran, R.; Sullivan, J.; Buckman, S.; Bellm, S.; Lohmann, B.; Fursa, Dmitry; Bray, Igor; Mueller, D.; Stauffer, A.; Hoshino, M.

doi:10.1103/PhysRevA.83.032721

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Authors

Makochekanwa, C.

Machacek, J.

Jones, A.

Caradonna, P.

Slaughter, D.

McEachran, R.

Sullivan, J.

Buckman, S.

Bellm, S.

Lohmann, B.

Fursa, Dmitry

Bray, Igor

Mueller, D.

Stauffer, A.

Hoshino, M.

Date

2011

Type

Journal Article

Metadata

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Citation

Makochekanwa, C. and Machacek, J. and Jones, A. and Caradonna, P. and Slaughter, D. and McEachran, R. and Sullivan, J. et al. 2011. Low-energy positron interactions with krypton. Physical Review A. 83 (3): pp. 032721-1-032721-12.

Source Title

Physical Review A

DOI

10.1103/PhysRevA.83.032721

ISSN

1050-2947

School

Department of Physics and Astronomy

URI

http://hdl.handle.net/20.500.11937/3015

Collection

Curtin Research Publications

Abstract

Cross sections for positron scattering from krypton have been measured with an energy resolution of ∼60 meV over the energy range 0.5–60 eV. Absolute values of the grand total (σGT), positronium formation (σPs), and grand total minus positronium formation (σGT−σPs,) cross sections are presented. Theoretical estimations of σGT and σGT−σPs are also performed for this target using the convergent close-coupling method and the relativistic optical potential approach. We also provide experimental and theoretical results for elastic differential cross sections, for selected energies both below and above the Ps threshold. Where available, the present results are compared to both experimental and theoretical values from the literature.