类氦离子的KLL双电子复合过程的相对论理论研究

在相对论多组态Dirac-Fock理论基础上，发展了计算双电子复合截面的程序.并以类锂C³⁺，Ar¹⁵⁺，Kr³³⁺和U⁸⁹⁺等离子为例，详细计算了共振双激发态1s2l2l′的辐射衰变率、Auger衰变率及相应的双电子复合截面.对于C⁴⁺，Ar^l6+和Kr³⁴⁺离子的结果与已有的计算和实验结果都能很好地符合；对于U⁹⁰⁺离子，则重点 关键词： 双电子复合 截面 MCDF

Relativistic theoretical study on the KLL dielectronic recombination of helium-like ions

Based on the multiconfiguration Dirac-Fock method, a new program was developed for the calculation of cross sections of dielectronic recombination (DR). As an example, the decay rates and the corresponding DR cross sections have been systematically calculated for the doubly excited state 1s2l2l′ of C³⁺, Ar¹⁵⁺, Kr³³⁺ and U⁸⁹⁺ ions. For C⁴⁺, Ar¹⁶⁺ and Kr³⁴⁺ ions, a good agreement has been found between the present calculations and the previous theoretical and experimental results; for U⁹⁰⁺ ion, the effect of the Breit interation on the DR cross sections has been emphasized especially.