Atomic-number dependence of the magnetic-sublevel population in the autoionization state formed in dielectronic recombination
Atomic-number dependence of the magnetic-sublevel population in the autoionization state formed in dielectronic recombination
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DOI：
10.1103/physreva.90.062702
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发表时间：
2014-12
影响因子：
2.9
通讯作者：
Zhimin Hu;Yichen Li;Xiaoying Han;D. Kato;X. Tong;H. Watanabe;N. Nakamura
中科院分区：
文献类型：
--
作者：
Zhimin Hu;Yichen Li;Xiaoying Han;D. Kato;X. Tong;H. Watanabe;N. Nakamura
用电子束离子阱结合两种测量方法，对高电荷态重离子双电子复合（DR）过程中自电离态的磁次能级布居进行了实验研究。这两种不同的测量是相对于电子束在${90}^{\ensuremath{\circ}}$处的微分X射线测量和积分共振强度测量。本文计算了类锂Pr（原子序数$Z=59$）和Ho（原子序数$Z=67$）在DR中形成的自电离态${[1 s2 {s}^{2}2{p}_{1/2}]}_{1}$的磁子能级布居分布的取向参数。这项工作是一个补充，我们以前的工作[物理。108，073002（2012）]在类Li Au（$Z=79$）上。实验结果是在合理的协议与理论预测，和一个强大的$Z$依赖的趋势，由于Breit相互作用已被证实。
The magnetic-sublevel population of the autoionization state formed in dielectronic recombination (DR) of highly charged heavy ions has been experimentally investigated by combining two types of measurements with an electron beam ion trap. The two different measurements are the differential x-ray measurement at ${90}^{\ensuremath{\circ}}$ with respect to the electron beam and the integral resonance-strength measurement. The alignment parameter, which denotes the magnetic-sublevel population distribution, has been obtained for the autoionization states ${[1s2{s}^{2}2{p}_{1/2}]}_{1}$ formed in DR of Li-like Pr (atomic number $Z=59$) and Ho ($Z=67$). This work is a complement to our previous work [Phys. Rev. Lett. 108, 073002 (2012)] on Li-like Au ($Z=79$). The experimental results are in reasonable agreement with theoretical predictions, and a strong $Z$-dependent tendency due to the Breit interaction has been confirmed.