Dielectronic recombination computations of Rh-, Pd- and Ag-like W with the FAC code

The dielectronic recombination (DR) process plays an important role in high-temperature plasmas, where it affects both the ionization balance and radiative energy losses. Tungsten is being considered as a plasma-facing material in magnetically confined fusion devices, such as ITER, because of its low sputtering rate, high temperature characteristics and low tritium absorption. Considerable effort has been made to obtain reliable atomic data to enable identification of reference lines for plasma diagnostics and to reliably estimate radiative cooling rates and a significant number of publications on DR processes have been published. DR rate coefficients for Rh-, Pd- and Ag-like tungsten have been studied by using the Flexible Atomic Code (FAC). (author)