Global characteristics of atomic spectra and their use for the analysis of spectra. VI. Transition arrays in the relativistic Dirac-Breit approximation

摘要

The method of unrestricted transition arrays successfully applied for the interpretation of spectra of high temperature plasmas is grounded on usage of explicit expressions for the main global characteristics of spectra. However, in the relativistic approximation only the expressions for the first two such characteristics - average energy and variance - were known, and calculated taking into account Coulomb and spin - orbit interactions as well as restricting the transition operator by the electric dipole operator. In this study, we present the expressions for the first three global characteristics in the relativistic Dirac - Breit approximation. As an example of their application the asymmetry of spectra for various ions of tungsten is investigated.