Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 268, Issue 2, Pages 178-182Publisher
ELSEVIER
DOI: 10.1016/j.nimb.2009.10.187
Keywords
Positron scattering; Method of continued fractions; Schwinger multichannel method; Elastic cross sections
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Funding
- Brazilian agency CNPq
- MAPL
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We present a theoretical investigation on elastic positron-H2O collisions. More specifically, differential and integral cross sections in the 0-10 eV energy range are reported. The calculations were performed using two theoretical approaches, namely, the Schwinger multichannel method and the method of continued fractions. The positron-molecule interaction dynamics is described by using a potential composed of static and correlation-polarization contributions. Comparison of our calculated results with the recent experimental of Zecca et al. [J. Phys. B 39 (2006) 1597] and theoretical results is encouraging. (C) 2009 Elsevier B.V. All rights reserved.
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