The electron energy-loss rate due to radiative recombination

Mao, Junjie and Kaastra, Jelle and Badnell, N. R. (2017) The electron energy-loss rate due to radiative recombination. Astronomy and Astrophysics, 599. A10. ISSN 0004-6361

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    Abstract

    For photoionized plasmas, electron energy-loss rates due to radiative recombination (RR) are required for thermal equilib- rium calculations, which assume a local balance between the energy gain and loss. While many calculations of total and/or partial RR rates are available from literature, specific calculations of associated RR electron energy-loss rates are lacking. Here we focus on electron energy-loss rates due to radiative recombination of H-like to Ne-like ions for all the elements up to and including zinc (Z = 30), over a wide temperature range. We use the AUTOSTRUCTURE code to calculate the level-resolved photoionization cross section and modify the ADASRR code so that we can simultaneously obtain level-resolved RR rate coefficients and associated RR electron energy-loss rate coefficients. The total RR rates and electron energy-loss rates of H i and He i are compared with those found in literature. Furthermore, we utilize and parameterize the weighted electron energy-loss factors (dimensionless) to characterize total electron energy-loss rates due to RR. The RR electron energy-loss data are archived according to the Atomic Data and Analysis Structure (ADAS) data class adf48. The RR electron energy-loss data are also incorporated into the SPEX code for detailed modelling of photoionized plamsas.

    ORCID iDs

    Mao, Junjie ORCID logoORCID: https://orcid.org/0000-0001-7557-9713, Kaastra, Jelle and Badnell, N. R. ORCID logoORCID: https://orcid.org/0000-0001-7418-7996;