
Author(s):
U.I. Safronova, M.S. Safronova and T. Kato

Title:
Cross Sections and Rate Coefficients for Excitation of delta n = 1 Transitions in Lilike Ions with 6 < Z < 42
Date of publication:
Sep. 1995

Key words:
Lilike ions, inner shell excitation, cross section, rate coefficients, 6 < Z < 42

Abstract:
Excitation cross sections and rate coefficients by electron impact were calculated for the I s^2 2s  I s2s2p, I s^2 2s  Is2s^2 and Is^2 2s  I s2p^2 transitions of the Lilike ions (CIV, NV, OVI, NeVIII, MgX, A1XI, SiXII, SXIV, ArXVI, CaXVIII, TiXX, FeXXIV, NiXXVI, ZnXXVIII, GeXXX, SeXXXII, KrXXXIIV and MoXXXX) in the CoulombBom approximation with exchange including relativistic effects and configuration interaction. Level energies, mixing coefficients and transition wavelengths and probabilities were also computed. Calculations performed by the 1/Z perturbation theory and CoulombBorn approximation are compared with the R matrix method and the distortedwave approximation were Z is the nuclear charge. Formulae obtained for the angular factors of nelectron atomic system allow one to generalize this method to an arbitrary system of highly charged ions.

