Electron-Collisional Spectroscopy of Atoms and Ions: Advanced Energy Approach

Abstract

An advanced relativistic energy approach combined with a scattering theory is used to calculate the electroncollision excitation cross-sections, collision strengths for a number of multicharged ions. The relativistic many-body perturbation theory is used alongside the gauge-invariant scheme to generate an optimal Dirac-Kohn-Sham-Debye-Hückel one-electron representation. The results of relativistic calculation (taking into account the exchange and correlation corrections) of the electron collision cross-sections (strengths) of excitation of the transition between the fine-structure levels (2P 3/2 -2P 1/ 2 ) of the ground state of F-like ions with Z = 19-26 and of the [2s 2 1 S -(2s2p 1 Р)] transition in the В-like O 4+ are presented and analysed.

HYPERFINE STRUCTURE PARAMETERS FOR Li-LIKE MULTICHARGED IONS WITHIN RELATIVISTIC MANY-BODY PERTURBATION THEORY

“…The alternative versions are proposed in refs. [30][31][32][33][34][35][36][37]. The general scheme of treatment of the spectra for Li-like ion is as follows.…”