Dielectronic-recombination rate coefficients of hydrogenlike ions in high-temperature low-density plasmas

Abstract

Dielectronic-recombination rate coefficients of selected hydrogenlike ions (Z=10, 14, 18, 20, 22, 26, and 28) have been calculated at various plasma temperatures (${\mathrm{kT}}_e$=0.6–10 keV) using the Hartree-Fock-Slater atomic model and assuming a Maxwellian velocity distribution for the free electrons. The effects of configuration interaction and spin-orbit coupling are included in all intermediate resonance states ‖2lnl’SLJ〉 for n≤4. Configuration average rates have been used to calculate dielectronic-recombination rate coefficients for n=5–8, and 1/$n^3$ scaling law for all higher-lying states. The results from the present calculations are compared with available theoretical and experimental values of dielectronic-recombination rate coefficients.