Electron-ion recombination of Fe II
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Date
1997-03
Authors
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Journal ISSN
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Publisher
American Physical Society
Abstract
A complete treatment of electron-ion recombination of e + Fe III → Fe II employing a unified method is presented. The treatment incorporates both the radiative and dielectronic recombinations in a self-consistent manner. Total recombination rate coefficients are obtained from photoionization cross sections, and from
collision strengths for dielectronic recombination calculated using the precise theory of Bell and Seaton [J. Phys. B 18, 1589 (1985)]. Large-scale computations for both of these quantities are carried out in the close coupling approximation using the R-matrix method with an eigenfunction expansion that includes 83 states of
Fe III dominated by the ground 3d^6, and the excited 3d^5 4s and 3d^5 4p configurations. Both the total and state-specific recombination rate coefficients are obtained. Comparison of the present results with the previous ones shows considerable difference for most of the temperature regions. The present results provide accurate
and self-consistent recombination rates, in the temperature range of practical applications (T < 10^5 K), for
ionization balance in photoionization models employing the detailed photoionization cross sections from the Opacity Project. [S1050-2947(97)00103-0]
Description
Relevant data is available at: http://www.astronomy.ohio-state.edu/~nahar/nahar_radiativeatomicdata/index.html
Keywords
electron-ion recombination, photoionization cross sections, R-matrix method
Citation
Nahar, Sultana Nurun. "Electron-ion recombination of Fe II," Physical Review A, v. 55, no. 3, March, 1997.