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- Title
Radiative Recombination Plasma Rate Coefficients for Multiply Charged Ions.
- Authors
Fritzsche, Stephan; Maiorova, Anna V.; Wu, Zhongwen
- Abstract
Radiative recombination (RR) plasma rate coefficients are often applied to estimate electron densities and temperatures under quite different plasma conditions. Despite their frequent use, however, these rate coefficients are available only for selected (few-electron) ions and isoelectronic sequences, mainly because of the computational efforts required. To overcome this limitation, we report here a (relativistic) cascade model which helps compute fine-structure and shell-resolved as well as total RR plasma rate coefficients for many, if not most, elements of the periodic table. This model is based on Jac, the Jena Atomic Calculator, and supports studies on how the electron is captured in selected levels of the recombined ion, a relativistic (Maxwellian) electron distribution, or how the multipoles beyond the electric-dipole field in the electron-photon interaction affect the RR rate coefficients and, hence, the ionization and recombination dynamics of hot plasma. As a demonstration of this model, we compute, compare, and discuss different RR plasma rate coefficients for initially helium-like ions, with an emphasis especially on Fe 24 + ions.
- Subjects
RELATIVISTIC plasmas; ISOELECTRONIC sequences; ELECTRON distribution; HELIUM plasmas; ELECTRON density; IONS; PERIODIC table of the elements
- Publication
Atoms (2218-2004), 2023, Vol 11, Issue 3, p50
- ISSN
2218-2004
- Publication type
Article
- DOI
10.3390/atoms11030050