TY - JOUR
T1 - Elastic Scattering of Positron by Gold Atom
AU - Sharma , Kapil K.
AU - Singh , Neerja
AU - Vats , R. P.
JO - Journal of Atomic and Molecular Sciences
VL - 4
SP - 294
EP - 304
PY - 2011
DA - 2011/02
SN - 2
DO - http://doi.org/10.4208/jams.022611.031311a
UR - https://global-sci.org/intro/article_detail/jams/8164.html
KW - relativistic calculation, positron scattering.
AB - <p style="text-align: justify;">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.</p>