Auger decay and the direct double ionization probability of a 2p inner-shell hole in a singly charged Ar+ ion
Auger decay and the direct double ionization probability of a 2p inner-shell hole in a singly charged Ar+ ion
复制标题
单电荷 Ar 离子中 2p 内壳孔的俄歇衰变和直接双电离概率
DOI：
10.1140/epjd/e2014-50124-5
复制
发表时间：
2014
影响因子：
1.8
通讯作者：
Yuan Jianmin
中科院分区：
文献类型：
--
作者：
Liu Pengfei;Liu Yanpeng;Zeng Jiaolong;Yuan Jianmin
在扭曲波近似下，利用微扰理论研究了2p53s23p5和2p53s3p6组态的Ar+2p− 1空穴能级的单俄歇和双俄歇衰变过程.单个俄歇衰变通道和速率的确定和预测的总速率可以相差超过一个数量级的水平2p53s23p5，但他们是非常接近的水平属于2p53s3p6。通过结合中性物质的双光电离截面，我们的单俄歇衰变过程的理论俄歇谱很好地解释了最近的实验[S.M. Huttula等人，110，113002（2013）]。预测2p53s23p5和2p53s3p6的直接双俄歇衰变对总几率的组态平均分支比分别为6.5%和7.3%，这比Ar 2p− 1空穴态的组态平均分支比小。
Single and double Auger decay processes of Ar+2p−1hole levels belonging to the configurations of 2p53s23p5and 2p53s3p6are investigated in the framework of perturbation theory implemented by the distorted wave approximation. The single Auger decay channels and rates are determined and the predicted total rates can differ by more than an order of magnitude for the levels of 2p53s23p5, yet they are very close for levels belonging to 2p53s3p6. By combining the double photoionization cross sections of the neutral species, our theoretical Auger spectra of the single Auger decay process nicely interpreted a recent experiment [S.M. Huttula et al., Phys. Rev. Lett.110, 113002 (2013)]. A configuration averaged branching ratio of 6.5% and 7.3% are predicted for the direct double Auger decay to the total probability for 2p53s23p5and 2p53s3p6, respectively, which is smaller than that of Ar 2p−1hole states.