Resonant electron impact excitation of highly charged Fe ions studied with a compact electron beam ion trap
Resonant electron impact excitation of highly charged Fe ions studied with a compact electron beam ion trap
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使用紧凑型电子束离子阱研究高电荷铁离子的共振电子碰撞激发
DOI：
10.1002/xrs.3148
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发表时间：
2020
影响因子：
1.2
通讯作者：
N. Nakamura
中科院分区：
文献类型：
--
作者：
M. Monobe;H.A. Sakaue;D. Kato;I. Murakami;H. Hara;T. Watanabe;N. Nakamura
本文报道了用电子束离子阱观察到的Fe ~（14+）3s 3 p-3s 3d跃迁的极紫外光谱。间接激发通过亚稳态和共振激发的贡献进行了研究，通过观察的电子能量依赖的光谱的能量范围为60-210 eV。结果表明，3s 3d 1D 2能级是由3s 2基态直接激发的，而3s 3d 3D 3能级则是由3s 3 p3 P2亚稳态间接激发的.与理论激发截面的比较，包括MNn共振激发显示出良好的定性与实验结果的电子能量依赖的功能。
We present extreme ultraviolet spectra of 3s3p–3s3dtransitions in Fe14+observed with a compact electron beam ion trap. The contributions of indirect excitation via a metastable state and resonant excitation are studied by observing the electron energy dependence of the spectra for the energy range of 60–210 eV. The results indicate that the 3s3d1D2level is directly excited from the 3s2ground state whereas the 3s3d3D3level has a large contribution of the indirect excitation via the 3s3p3P2metastable state. Comparisons with the theoretical excitation cross sections includingMNnresonant excitations show good qualitative agreement with the experimental results for the electron energy dependent features.