Effects of correlation interaction of electrons with deep holes in X‐ray spectra of metals

Abstract

AbstractAbsorption spectra and spectra of emission excited by the secondary method are calculated. Two modes of emission excitation are considered: (i) the energy of exciting quanta is great with respect to the inner‐level ionization threshold, (ii) the energy of exciting quanta is continuously filling a small interval (about the width of the valence band) near the threshold. The calculations are carried out for a simple metal model by a one‐site approximation using the formalism of an effective non‐hermitian Hamiltonian which enables one to involve in a natural way into the theory the readjustment effects of a valence system in the field of the emerging hole as well as the finite lifetime of that hole. In the whole frequency interval of the observed values of the spectra the calculation results obtained by the non‐hermitian Hamiltonian method are compared with those obtained on the basis of other methods known earlier. The effect of overlap of the absorption and emission spectra for the threshold mode of excitation is made depending on the relation between the hole lifetime and the conduction electron relaxation time.