Recombination X-ray line formation of iron L-shell ions in low-temperature plasmas

In low-temperature plasmas, X-ray line emission is dominated by radiative cascades following recombination and photoexcitation, with a negligible contribution from collisional excitation. In this paper, we present theoretical line formation rate coefficients for all n-->2 (3less than or equal tonless than or equal to5) transitions of Fe XVII-XXIV in the temperature range between 1 and 500 eV. Both radiative recombination (RR) and DeltaN=0 dielectronic recombination (DR) are taken into account. In addition, the rate coefficients for radiative recombination continua onto n=2 and 3 states of Fe XVII-XXIV are tabulated. The total RR rate coefficients of Fe XVIII-XXV and total DeltaN=0 DR rate coefficients of Fe XVIII-XXIV are presented as well, and compared with existing experimental measurements and theoretical calculations.