Relativistic Distorted-Wave Calculations of Electron Impact Excitation Cross Sections of Be-Like C2+ Ions
Relativistic Distorted-Wave Calculations of Electron Impact Excitation Cross Sections of Be-Like C2+ Ions
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DOI：
10.1088/0256-307x/24/3/028
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发表时间：
2007-02
影响因子：
3.5
通讯作者：
Jiang Jun;Dong Chen-zhong;Xie Lu-you;W. Jianguo;Y. Jun;S. Fritzsche
中科院分区：
文献类型：
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作者：
Jiang Jun;Dong Chen-zhong;Xie Lu-you;W. Jianguo;Y. Jun;S. Fritzsche
基于Grasp92和Ratip开发了一个计算电子冲击激发（EIE）截面的完全相对论畸变波程序。作为该程序的首次应用，系统地计算了类be C2+离子从亚稳态1s22s2p 3P到1s22p2 3P激发和内壳层激发的ee截面。同时，讨论了目标态的相关效应。研究发现，相关效应在低能电火花截面中起着重要作用。将计算结果与以往的计算结果和最近的测量结果进行比较，发现两者非常吻合。
A fully relativistic distorted-wave program is developed based on the Grasp92 and Ratip packages to calculate electron impact excitation (EIE) cross sections. As a first application of the program, the EIE cross sections of Be-like C2+ ions from the metastable 1s22s2p 3P to 1s22p2 3P excitation and the inner-shell excitations are calculated systematically. Meanwhile, the correlation effects of target states are discussed. It is found that the correlation effects play an important role in the low energy EIE cross sections. An excellent agreement is found when the results are compared with previous calculations and recent measurements.