Radiative recombination data for tungsten ions: III.  W14+–W23

• Published in: Atomic data and nuclear data tables Vol. 100; no. 5; pp. 1156 - 1188
• Main Authors: Trzhaskovskaya, M.B., Nikulin, V.K.
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01-09-2014
• Subjects: Photoionization; Radiative recombination; Rate coefficients; Relativistic calculations; Photoionization; Relativistic calculations; Rate coefficients; Radiative recombination
• ISSN: 0092-640X; 1090-2090
• DOI: 10.1016/j.adt.2014.06.001

This paper completes the cycle of our calculations of the radiative recombination and photoionization data for tungsten ions. Presented here are the photoionization and radiative recombination cross sections, radiative recombination rate coefficients, and radiated power loss rate coefficients for ten tungsten impurity ions from W14+ to W23+. These data are required in diagnostics and modeling fusion plasmas studied in such devices as ITER, ASDEX Upgrade, and EBIT. Partial photoionization cross sections have been fitted by an analytical expression with five fit parameters tabulated here. Total radiative recombination cross sections are presented in the electron energy range from 1 eV to ∼80 keV. Radiative recombination rates and radiated power loss rates are given in the temperature range from 104  K to 109  K. Calculations have been performed on the basis of the fully relativistic treatment of photoionization and radiative recombination taking into account all significant multipoles of the radiative field. Electron wave functions have been obtained by the Dirac–Fock method with the proper consideration of the electron exchange. The relativistic Maxwell–Jüttner distribution of continuum electrons has been used in calculations of radiative recombination rates and radiated power loss rates. This decreases values of the rates noticeably at a high temperature as compared to the usual non-relativistic Maxwell–Boltzmann distribution.
•Radiative recombination data for ten tungsten ions W14+–W23+ are presented.•Photoionization cross sections are also given.•Calculations are fully relativistic including all multipoles of the radiative field.•We use the Dirac–Fock method to obtain the electron wave functions.•The data are required for diagnostics and modeling fusion plasmas studied in ITER.