Abstract
Energy levels, radiative transition probabilities and autoionization rates for [Kr]4d94fnl (n = 4–9), [Kr]4d95l′nl (n = 5–9) and [Kr]4d96l′nl (n = 6–7) states in Ag-like tungsten (W27 +) are calculated using the relativistic many-body perturbation theory method, the multiconfiguration relativistic Hebrew University Lawrence Livermore Atomic Code and the Hartree–Fock-relativistic method. Branching ratios relative to the first threshold and intensity factors are calculated for satellite lines, and dielectronic recombination (DR) rate coefficients are determined for the singly excited [Kr]4d10nl (n = 4–9) states. The total DR rate coefficient is derived as a function of electron temperature. These atomic data are important in the modelling of N-shell radiation spectra of heavy ions generated in various collision as well as plasma experiments. The tungsten data are particularly important for fusion application.
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