Positron interactions with molecules

In this work, we report elastic integral cross sections for low energy positron scattering by carbon monoxide and model calculations for vibrationally enhanced positron annhilation on molecules. The former studies employed the Schwinger Multichannel method in the static plus polarization approximati...

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Bibliographic Details
Published in:Journal of physics. Conference series 2012-01, Vol.388 (1), p.12019-6
Main Authors: Sanchez, Sergio d'A, de Oliveira, Eliane M, Lima, Marco A P, Varella, Márcio T do N
Format: Article
Language:English
Subjects:
Approximation
Carbon monoxide
Convergence
Couplings
Formalism
Mathematical analysis
Mathematical models
Physics
Positron scattering
Positrons
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Summary:In this work, we report elastic integral cross sections for low energy positron scattering by carbon monoxide and model calculations for vibrationally enhanced positron annhilation on molecules. The former studies employed the Schwinger Multichannel method in the static plus polarization approximation with two different basis sets to access numerical convergence. In the annihilation studies, the role of multimode vibrational couplings was surveyed with the help of an analytically solvable model based on the Feshbach projection operator formalism.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/388/1/012019