Dielectronic recombination of Co-like tantalum  

作　　者：周莉 孟凡昌 黄敏 陈重阳 王炎森 

机构地区：[1]The Key Laboratory of Applied Ion Beam Physics,the Ministry of Education [2]Shanghai EBIT Laboratory,Modern Physics Institute,Fudan University

出　　处：《Chinese Physics B》2009年第8期3409-3413,共5页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No 10574029);the Chinese Association of Atomic and Molecular Data and National High-Tech ICF Committee in China;supported by Shanghai Leading Academic Discipline Project (Grant No B107)

摘　　要：Ab initio calculation of the total dielectronic recombination （DR） rate coefficient from the ground state of Co-like tantalum is performed using the relativistic distorted-wave approximation with configuration interaction. The contributions to the total DR rate coefficients are explicitly calculated from the complexes of Ni-like tantalum：3s^23p^63d3/2^33d5/2^6n′l′,3s^23p^53d^10n′l′,3s3p^63d^10n′l′,3s^23p^63d^84ln′l′,3s^23p^53d^94ln′l′ and 3s3p^63d^94ln′l′ with n′≤25, and 3s^23p^63d^85ln′l′ with n′≤9.The l′and n′ dependences of partial DR rate coefficients are investigated. The contributions from higher n^complexes are evaluated by a level-by-level extrapolation method. The total DR rate coefficients mainly come from the complex series 3s^23p^63d^84ln′l′,3s^23p^53d^94ln′l′and are fitted to an empirical formula with high accuracy. Comparison of the present results with those of other works shows that the previously published data underestimate significantly the DR rates of Co-like tantalum.Ab initio calculation of the total dielectronic recombination （DR） rate coefficient from the ground state of Co-like tantalum is performed using the relativistic distorted-wave approximation with configuration interaction. The contributions to the total DR rate coefficients are explicitly calculated from the complexes of Ni-like tantalum：3s^23p^63d3/2^33d5/2^6n′l′,3s^23p^53d^10n′l′,3s3p^63d^10n′l′,3s^23p^63d^84ln′l′,3s^23p^53d^94ln′l′ and 3s3p^63d^94ln′l′ with n′≤25, and 3s^23p^63d^85ln′l′ with n′≤9.The l′and n′ dependences of partial DR rate coefficients are investigated. The contributions from higher n^complexes are evaluated by a level-by-level extrapolation method. The total DR rate coefficients mainly come from the complex series 3s^23p^63d^84ln′l′,3s^23p^53d^94ln′l′and are fitted to an empirical formula with high accuracy. Comparison of the present results with those of other works shows that the previously published data underestimate significantly the DR rates of Co-like tantalum.

关 键 词：dielectronic recombination rate coefficient Co-like tantalum 

分 类 号：O562[理学—原子与分子物理]