Excitation energies, radiative and autoionization rates, dielectronic satellite lines, and dielectronic recombination rates for excited states of Yb-like W

摘要

Energy levels, radiative transition probabilities and autoionization rates for [Cd]4f ~(14)5p ~65lnl, [Cd]4f ~(14)5p ~66lnl, [Cd]4f ~(14)5p ~55d ~2nl, [Cd]4f ~(14)5p ~55d6lnl, [Cd]4f ~(13)5p ~65d ~2nl and [Cd]4f ~(13)5p ~65d6lnl (l = d, f, g, l = s, p, d, l = s, p, d, f, g and n = 57) states of Yb-like tungsten (W ~(4 +)) are calculated using the relativistic many-body perturbation theory method (RMBPT code), the multiconfiguration relativistic Hebrew UniversityLawrence Livermore Atomic Code (HULLAC code) and the HartreeFock relativistic method (COWAN code). Branching ratios relative to the [Cd]4f ~(14)5p ~65d, [Cd]4f ~(14)5p ~66s and [Cd]4f ~(14)5p ~66p thresholds in Tm-like tungsten and intensity factors are calculated for satellite lines, and dielectronic recombination (DR) rate coefficients are determined for the singly excited, as well as non-autoionizing core-excited states in Yb-like tungsten. Contributions from the autoionizing doubly excited states [Cd]4f ~(14)5p ~65fnl, [Cd]4f ~(14)5p ~66lnl and core-excited [Cd]4f ~(14)5p ~55d ~2nl, [Cd]4f ~(14)5p ~55d6lnl, [Cd]4f ~(13)5p ~65d ~2nl, [Cd]4f ~(13)5p ~65d6lnl states (with n up to 100), which are particulary important for calculating the total DR rates, are estimated. Synthetic dielectronic satellite spectra from Yb-like W are simulated in a broad spectral range from 200 to 1400 ?. These calculations provide recommended values critically evaluated for their accuracy for a number of W ~(4 +) properties useful for a variety of applications including for fusion applications.