Influence of gasdynamic motion of the active medium during a pump pulse on the angular divergence of radiation emitted from electron-beam-controlled lasers

Abstract

Spin-density functional theory, in the local spin-density approximation (LSDA) was used to calculate the total Fermi contact contribution, K,, to the Knight shift in solid Mg. The self-consistent spin-polarised Kohn-Sham equations were solved for the spin and number densities by the linear augmented plane wave method in the muffin-tin approximation. For the exchange-correlation energy functional we used the recent accurate results of Vosko et al. K , was found to consist of the contributions 0.138",, -0.003", and -0.007", due to the Fermi surface, core and valence electrons below the Fermi surface respectively, yielding a total which is 140," larger than the experimental value.We compare our results with previous LSDA calculations which used an ion-in-jellium model.