Spin polarization and cross sections in elastic scattering of electrons from Yb, Rn, and Ra atoms

Abstract

Differential, integrated elastic, momentum transfer, total cross sections, and spin polarization parameters S, T, and U for scattering of electrons from Yb, Rn, and Ra atoms in energy range of 2.0--500.0 eV are calculated using the relativistic Dirac equation. The projectile-target interaction is represented both by real- and complex-optical potential in the solution of Dirac equation for the scattered electrons. The real-optical potential includes the static, a parameter-free correlation polarization potential and modified semiclassical exchange potentials. The complex potential is included via a phenomenological absorption potential to account for the loss of flux into the nonelastic channels. We compare our results for differential cross sections and spin polarization parameters with the available calculations and experimental measurements.