The dielectronic recombination rate coefficients for ions in the He, Li, Be, and NE isoelectronic sequences

Details The dielectronic recombination rate coefficients for ions in the He, Li, Be, and NE isoelectronic sequences The dielectronic recombination rate coefficients for ions in the He, Li, Be, and NE isoelectronic sequences

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...330.1022r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 330, July 15, 1988, p. 1022-1035.

Physics

Atomic Physics

42

Beryllium, Cosmic Plasma, Electron Recombination, Helium, Isoelectronic Sequence, Lithium, Neon, Astrophysics, Atomic Physics, High Temperature Plasmas, Oscillator Strengths, Radiative Transfer, Recombination Coefficient

Scientific paper

The rate coefficients for the dielectronic recombination of astrophysically abundant ions in the He, Li, Be, and Ne isoelectronic sequences are computed in the isolated resonance approximation. All important electric dipole radiative transitions are included, allowing for nondipole as well as dipole captures and autoionizing transitions. Radiative and autoionization rates are calculated from experimental oscillator strengths and energy level data whenever these are available, using approximations to reduce the complexity of the computation. An LS coupling scheme is adopted where the coupling of the captured electron is averaged over in the computations. The accurate determination of possible capture and decay channels makes it possible to compute dielectronic recombination rate coefficients which are a substantial improvement over the Burgess (1965) and Merts et al. (1980) method and previous work that neglect some transitions or employ configuration-averaged energies and decay rates.

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