Calculation of the photoionization cross sections for the potassium and the bromine atoms by using the time-dependent local spin density approximation

Abstract

The density functional approach to local field is extended to a spin-polarized finite electronic system. The time-varying local field, which is dependent on the spin components of electrons, incorporates the polarization-type many-body effects of electronic correlations into the photoionization cross section. To examine the spin-dependent local field effects, the photoionization cross sections of the potassium and the bromine atom are calculated by using this time-dependent local spin density approximation. The results obtained are compared with available information from other theoretical methods and experiments.