Elastic Scattering of Electrons from Inert Gases: 5. Argon and Krypton in the Vicinity of Ramsauer-Townsend Minima and on the Choice of Pseudo-States

摘要

Recently, several electron scattering experiments using improved experimental techniques have been reported for Ar and Kr in the region of Ramsauer-Townsend minima. The calculations of Fon et al. on electrons colliding with inert-gas atoms are extended to examine these experimental data. These calculations using a single pseudo-state to account for the dipole polarisability of the ground state atom while ignoring a whole host of excitation mechanisms, have been the subject of considerable controversy (e.g. Reinhardt 1981; Walters 1981). The answers to the questions raised by Walters (1981) may well lie in the present calculation and those of Fon et al. (1983, 1984) in which the /sup 1/P pseudo-states used in these calculations give polarisabilities at least 15% larger than the experimental values. 45 refs, 6 figs, 6 tabs. (Atomindex citation 18:015577)