Relativistic convergent close-coupling method applied to electron scattering from mercury
Relativistic convergent close-coupling method applied to electron scattering from mercury
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相对论会聚紧耦合方法应用于汞电子散射
DOI：
10.1103/physreva.82.022713
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发表时间：
2010
影响因子：
2.9
通讯作者：
I. Bray
中科院分区：
文献类型：
--
作者：
C. Bostock;D. Fursa;I. Bray
我们报道了最近形成的相对论收敛紧耦合(RCCC)方法的扩展，以适应双电子和准两电子靶。我们将该理论应用于汞的电子散射，得到了弹性和非弹性散射的微分截面和积分截面。我们与以前的非相对论收敛紧耦合(CCC)计算进行了比较，对于一些跃迁，我们得到了与实验更好的符合。RCCC方法能够解决(6s6p){sup 3}P{sub0，1，2}态激发阈值附近能区的积分截面结构。这些截面与负离子(Hgsup-)共振的形成有关，而这是非相对论CCC方法所不能解决的。RCCC的结果与实验和其他相对论理论进行了比较。
We report on the extension of the recently formulated relativistic convergent close-coupling (RCCC) method to accommodate two-electron and quasi-two-electron targets. We apply the theory to electron scattering from mercury and obtain differential and integrated cross sections for elastic and inelastic scattering. We compared with previous nonrelativistic convergent close-coupling (CCC) calculations and for a number of transitions obtained significantly better agreement with the experiment. The RCCC method is able to resolve structure in the integrated cross sections for the energy regime in the vicinity of the excitation thresholds for the (6s6p) {sup 3}P{sub 0,1,2} states. These cross sections are associated with the formation of negative ion (Hg{sup -}) resonances that could not be resolved with the nonrelativistic CCC method. The RCCC results are compared with the experiment and other relativistic theories.