Elastic collision cross sections and Monte Carlo calculations of Kr+ ions drifting in gaseous krypton

Differential and integral cross sections for elastic collisions of Kr⁺ ions with Kr atoms are calculated, for center of mass collision energies from 1 meV to 10 eV, using the JWKB approximation. These cross sections are used in a detailed three- dimensional Monte Carlo model to calculate drift velocities and longitudinal and transverse diffusion coefficients for Kr⁺ ions, in the ²P_3/2 ground state and in the ²P_1/2 metastable state, in gaseous Kr, at temperature T=293 K and reduced electric fields, E/N, in the 1 to 500 Td (1Td=10^-17 V cm²). The calculated results are compared with the scarce published experimental data.