Calculation of drift velocities and diffusion coefficients of Xe/sup +/ ions in gaseous xenon

Elastic collision cross-sections for Xe⁺ ions with neutral Xe atoms are calculated using a modified Tang-Toennies ion-atom potential and a semi-classical approximation with phase shifts calculated by the Jeffreys-Wentzel-Kramers-Brillouin approximation. Results are presented for integral and differential cross sections at center-of-mass energies in the 1 meV to 10 eV energy range. The cross sections were then used to calculate the drift velocities and diffusion coefficients of Xe⁺ ions in gaseous xenon at atmospheric pressures and reduced electric fields, E/N, in the 3 to 300 Td range (N is the neutral gas number density and 1 Td=10^-17 Vcm² ) using Monte Carlo technique. The results obtained are compared and discussed with limited experimental data available from previous studies