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Optical model theory for positron annihilation during scattering

Ivanov, IA and Mitroy, J (2000). Optical model theory for positron annihilation during scattering. Journal of Physics B: Atomic, Molecular and Optical Physics,33(21):831-837.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 13 times in Scopus Article | Citations

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Title Optical model theory for positron annihilation during scattering
Author Ivanov, IA
Mitroy, J
Journal Name Journal of Physics B: Atomic, Molecular and Optical Physics
Publication Date 2000
Volume Number 33
Issue Number 21
ISSN 0953-4075   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-0034322895
Start Page 831
End Page 837
Total Pages 7
Place of Publication Bristol, UK
Publisher IOP Publishing
HERDC Category C2 - Journal Article - Other contributions to refereed journal (internal)
Abstract The possibility of the annihilation process occurring during scattering of a positron by an atomic target is taken into account by means of an absorption potential. The imaginary absorption potential is chosen so that its matrix element in the plane wave Born approximation correctly reproduces existing perturbation theory expressions for the annihilation cross section. The momentum space Lippmann-Schwinger equations for positron-hydrogen scattering with the imaginary absorption potential are solved for some simple close-coupling expansions at energies below the positronium formation threshold. The optical potential calculations agree with previous perturbation theory calculations.
DOI http://dx.doi.org/10.1088/0953-4075/33/21/106   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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Created: Fri, 12 Sep 2008, 08:35:25 CST by Administrator