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Low-energy positron scattering from gas-phase benzene

  • Jan FranzEmail author
  • Małgorzata FranzEmail author
Open Access
Regular Article
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Abstract

In this paper we are presenting calculations of the elastic cross section of positrons with gas-phase benzene for the energy range from 0.25 eV to 9.0 eV. The calculations are done with the molecular R-matrix method for positron-scattering from poly-atomic molecules using a scaling factor to scale the electron-positron interaction. The scaling factor influences the position of the poles of the R-matrix. We adjust the scaling factor is such a way, that the position of the lowest pole is similar to the proposed binding energy of around 150 meV, given by [J.A. Young, C.M. Surko, Phys. Rev. Lett 99, 133201 (2007)]. Below the threshold for positronium formation, we calculate elastic cross section in good agreement with experimental cross sections. Above the threshold for positronium formation we use the difference between the experimental total cross section data and our computed elastic cross section to provide a first estimation of the cross section for positronium formation.

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Keywords

Atomic and Molecular Collisions 

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Copyright information

© The Author(s) 2019

Open AccessThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Authors and Affiliations

  1. 1.Department of Theoretical Physics and Quantum InformaticsFaculty of Applied Physics and Mathematics, Gdansk University of TechnologyGdańskPoland
  2. 2.Department of Physics of Electronic PhenomenaFaculty of Applied Physics and Mathematics, Gdansk University of TechnologyGdańskPoland

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