利用全相对论组态相互作用理论方法, 研究了类铷W37+离子从基组态3s23p63d104s24p64d经过双激发态(3s23p63d104s24p64d)-1nln′l′(n,n′=4,5)的双电子复合过程, 得到了该离子在温度为1~5×104 eV范围内的总双电子复合速率系数。分析比较了不同电子激发的双电子复合速率系数, 结果表明:4p电子激发的双电子复合速率系数在低温时给出了主要贡献, 而3d的贡献在高温时突出。由于强组态相互作用, 两电子一光子跃迁对双电子复合速率系数的贡献不可忽略, 其中辐射跃迁4p54d5d5f-4p64f5d的贡献是双激发态4p54d5d5f总的双电子复合速率系数的5%。对双电子复合、辐射复合以及三体复合速率系数的比较表明,在所研究的温度范围内双电子复合速率系数最大。

Calculations of dielectronic recombination(DR) rate coefficients from the ground state 3s23p63d104s24p64d of Rb-like W37+ ions through doubly excited states (3s23p63d104s24p64d)-1nln′l′(n,n′=4,5) are performed using the fully relativistic configuration interaction method. Total DR rate coefficients are obtained in the temperature range from 1 to 5×104 eV. Comparison of the DR rate coefficients from different subshell excitations shows that 4p subshell excitation dominates at low temperature, while 3d subshell excitation dominates at high temperature. The two-electron and one-photon radiative transitions are found to be important due to the strong configuration interactions, and the radiative transition 4p54d5d5f-4p64f5d contributes more than 5% of the total DR rate coefficients through the doubly excited state 4p54d5d5f. The total DR rate coefficients are greater than the radiative recombination(RR) and three-body recombination(TBR) rate coefficients for the whole energy region.