Updated Collisional Ionization Equilibrium Calculated for Optically Thin Plasmas

Details Updated Collisional Ionization Equilibrium Calculated for Optically Thin Plasmas Updated Collisional Ionization Equilibrium Calculated for Optically Thin Plasmas

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.1504s&link_type=abstract

American Astronomical Society, HEAD meeting #11, #15.04; Bulletin of the American Astronomical Society, Vol. 41, p.678

Astronomy and Astrophysics

Astronomy

Scientific paper

Reliably interpreting spectra from electron-ionized cosmic plasmas requires accurate ionization balance calculations for the plasma in question. However, much of the atomic data needed for these calculations have not been generated using modern theoretical methods and their reliability are often highly suspect. We have carried out state-of-the-art calculations of dielectronic recombination (DR) rate coefficients for the hydrogenic through Na-like ions of all elements from He to Zn as well as for Al-like to Ar-like ions of Fe. We have also carried out state-of-the-art radiative recombination (RR) rate coefficient calculations for the bare through Na-like ions of all elements from H to Zn. Using our data and the recommended electron impact ionization data of Dere (2007), we present improved collisional ionization equilibrium calculations (Bryans et al. 2006, 2009). We compare our calculated fractional ionic abundances using these data with those presented by Mazzotta et al. (1998) for all elements from H to Ni. This work is supported in part by the NASA APRA and SHP SR&T programs.

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