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Rotational excitation of tetrahedral and octahedral molecules caused by electron and positron impact

Momentum transfer, integral and differential cross sections
  • Marcos V. BarpEmail author
  • Felipe Arretche
Regular Article
  • 22 Downloads
Part of the following topical collections:
  1. Topical Issue: Low-Energy Positron and Positronium Physics and Electron-Molecule Collisions and Swarms (POSMOL 2019)

Abstract

Rotational excitation cross sections of tetrahedral and octahedral molecules caused by low energy positron/electron impact are the subject of this work. We developed a scattering model considering the Born approximation and the asymptotic multipole potential. These assumptions permitted us to achieve analytical expressions for rotational integral, momentum transfer and differential cross sections. We have found good agreement for positron and marginal agreement for electron interactions. The model can be improved with the inclusion of exchange effects and the distortion of the scattering wave function.

Graphical abstract

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Copyright information

© EDP Sciences / Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Departamento de Física, Universidade Federal de Santa CatarinaFlorianópolisBrazil

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