Dielectronic recombination of the Xe8+ ion and satellite lines of the Xe7+ ion

The Hartree-Fock relativistic method (Cowan code) and the relativistic many-body perturbation theory are used to perform a large-scale calculation of atomic parameters for dielectronic recombination (DR) of Pd-like Xe8+. The energy levels, radiative transition probabilities and autoionization rates are reported for 4d94fnl, 4d95l'nl, (n= 5-8) and 4d96lnl (n= 6-7) states in Ag-like Xe7+. The partial and total DR rate coefficients are calculated with account of high-n states, and contribution of different atomic configurations to DR is discussed. The branching ratios and intensity factors are calculated for dielectronic satellite lines. The obtained results can be used for modelling of various Xe plasmas including those used in lithography applications.