Observation of extreme ultraviolet transitions in highly charged Ba16+ to Ba23+ ions with electron beam ion trap
Observation of extreme ultraviolet transitions in highly charged Ba16+ to Ba23+ ions with electron beam ion trap
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DOI：
10.1063/1.4943962
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发表时间：
2016-03
影响因子：
2.2
通讯作者：
Safdar Ali;E. Shimizu;N. Nakamura
中科院分区：
文献类型：
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作者：
Safdar Ali;E. Shimizu;N. Nakamura
我们在东京EBIT实验室用小型电子束离子阱研究了高电荷钡的极紫外发射。在保持电子束电流恒定在10 mA的同时，记录了范围从440至740 eV的几个束能量的光谱。通过改变电子束能量和电离阈值，记录了从类Zr Ba16+到类As Ba23+的辐射，并与计算结果进行了比较。计算是用一个详细的相对论组态相互作用的方法，使用灵活的原子代码。观察并识别出几条属于电偶极跃迁的新谱线。
We have investigated extreme ultraviolet emission from highly charged barium using a compact electron beam ion trap at the Tokyo EBIT laboratory. The spectra were recorded for several beam energies ranging from 440 to 740 eV, while keeping the electron beam current constant at 10 mA. Radiation from charge states Zr-like Ba16+ to As-like Ba23+ were recorded and identified by varying the electron beam energy across the ionization thresholds and comparing with calculated results. The calculations were performed with a detailed relativistic configuration interaction approach using the Flexible Atomic Code. Several new lines belonging to electric dipole transitions were observed and identified.