Elastic Scattering of Positron by Gold Atom

Authors

  • Kapil K. Sharma Department of Mathematics, South Asian University, Akbar Bhavan, Chanakypuri, New Delhi110021, India
  • Neerja Singh Department of Electronics and Communication, A.B.E.S Engineering College, Ghaziabad (U.P), India
  • R. P. Vats Department of Physics, M.S (P.G) College, Saharanpur (U.P), India

DOI:

https://doi.org/10.4208/jams.022611.031311a

Keywords:

relativistic calculation, positron scattering.

Abstract

We present relativistic calculations of the differential, integrated elastic, momentum transfer total cross sections and spin polarization parameters for positrons scattered from Gold atom using a simple optical model potential to represent interaction between positron and target atoms in the energy range 2.0-500eV. In the present calculation we employ a parameter-free model potential for the correlation polarization and absorption potential as devised for positron-atom scattering. The theoretical results are obtained from relativistic approach based on solving the Dirac equation using Hartree-Fock and Dirac-Fock wave functions.

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Published

2011-02-01

Issue

Vol. 2 No. 4 (2011)

Section

Articles