DIELECTRONIC RECOMBINATION OF Co-LIKE Ag AND Ta IONS |
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Authors: | Yan Jun Li Ping Liu Chun-lei Qiu Yu-bo Fang Quan-yu |
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Affiliation: | Institute of Applied Physics and Computational Mathematics, Beijing 100088, China; Centre of Atomic and Molecular Sciences, Tsinghua University, Beijing 100084, China |
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Abstract: | Ab initio calculations of the rate coefficients for dielectronic recombination (DR) of Co-like Ag and Ta ions are performed based on Cowan's quasi-relativistic multi-configuration Hartree-Fock code. Co-like (3s 23p63d10)-1 configurations and Ni-like (3s23p63d10)-24l4l' autoionization configurations are included in the present calculation. Because of the extensive distribution of autoionization state energy levels, the DR rate coefficients cannot be reproduced or interpolated by a simple analytical formula, such as the Burgess-Merts formula, or the Hagelstein approximation. We propose to use multi-set Hagelstein parameters, which is convenient in practice and can reproduce well the ab initio calculated DR rate coefficients. |
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Keywords: | dielectronic recombination Co-like ions rate coefficient |
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