Positron Scattering from the Group IIB Metals Zinc and Cadmium: Recommended Cross Sections and Transport Simulations

Results from the application of our optical potential and relativistic models to positron scattering gas-phase zinc (Zn) cadmium (Cd) are presented. In particular, integral cross sections (ICSs) for elastic scattering, positronium formation, summed discrete electronic-state excitation, ionization processes reported both species over an extended incident energy range. From those ICSs, total section is subsequently constructed by taking their sum. We note that there currently no experimental data available any these either species, with earlier computational results being limited channel restricted relatively narrow regimes. Nonetheless, we construct recommended datasets range 0–10 000 eV. The employed in a multi-term Boltzmann equation analysis simulate transport positrons, under influence applied (external) electric field, through background Zn Cd gases. Qualitatively similar behavior calculated coefficients was observed between species. Finally, case zinc, present compared against corresponding electron some significant differences now observed.