Low-Energy Ps-Xe Scattering Analyzed Using a Modified Effective Range Theory

Kengo Shibuya; Haruo Saito

doi:10.4028/www.scientific.net/DDF.373.23

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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 373Low-Energy Ps-Xe Scattering Analyzed Using a...

Low-Energy Ps-Xe Scattering Analyzed Using a Modified Effective Range Theory

Abstract:

We have investigated positronium‒xenon collisions at energies below 100 meV to find a strong temperature dependences of the annihilation rates. A partial wave analysis based on a modified effective range theory (MERT) is tested to explain the temperature dependences and to find significant contributions of the p-wave scattering component. The fact that MERT works well for analyzing positronium‒xenon collisions indicates that positronium is polarized during the collisions as proposed by other theoretical and experimental researchers.

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Periodical:

Defect and Diffusion Forum (Volume 373)

Pages:

23-28

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.373.23

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Online since:

March 2017

Authors:

Kengo Shibuya*, Haruo Saito

Keywords:

Atomic Collisions, Gaseous Xenon, Modified Effective Range Theory, Partial Wave Expansion, Pick-Off Annihilation, Positronium Polarization, Positronium Spin-Conversion, Scattering Cross Section, Spin-Orbit Interaction, Zeeman Effect

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* - Corresponding Author

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