Annihilation rates of low-energy positron scattering from simple diatomic molecules

Jan Franz; F.a. Gianturco

doi:10.1016/j.nimb.2006.01.033

Annihilation rates of low-energy positron scattering from simple diatomic molecules

Abstract

We discuss the calculations of Zeff coefficients for a series of diatomic molecules over the range of energies below the positronium formation. During the development of a general code for polyatomic, nonlinear molecules colliding with positrons, it was discovered that the earlier one, employed only for diatomic molecules, had an error. The error is corrected and the corrected results are presented here. We also discuss a way of including a density-dependent enhancement factor when calculating Zeff values which is known to improve agreement with experiments in solids and we find that it also brings our calculations closer the available data for gaseous systems.

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Authors (2)

Jan Franz dr hab.
- The University of Rome “La Sapienza” Department of Chemistry
F.a. Gianturco
- University of Rome “La Sapienza” Department of Chemistry

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS no. 247, edition 1, pages 20 - 24,
ISSN: 0168-583X
Language:: English
Publication year:: 2006
Bibliographic description:: Franz J., Gianturco F.: Annihilation rates of low-energy positron scattering from simple diatomic molecules// NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS. -Vol. 247, iss. 1 (2006), s.20-24
DOI:: Digital Object Identifier (open in new tab) 10.1016/j.nimb.2006.01.033
Verified by:: Gdańsk University of Technology