类锗高电荷原子离子激发态的z相关三能级同时交叉

IF 2.6 3区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
Fumihiro Koike , Chihiro Suzuki , Nobuyuki Nakamura , Izumi Murakami , Daiji Kato , Naoki Tamura
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Large Helical Device (LHD) and EBIT are used for obtaining the wavelength of EUV emissions from the transitions of 4<em>s</em> or 4<em>p</em> excited states into their ground state <span><math><msub><mrow><mo>(</mo><mo>[</mo><mrow><mi>Ni</mi></mrow><mo>]</mo><mn>4</mn><msup><mrow><mi>s</mi></mrow><mrow><mn>2</mn></mrow></msup><mn>4</mn><msubsup><mrow><mi>p</mi></mrow><mrow><mo>−</mo></mrow><mrow><mn>2</mn></mrow></msubsup><mo>)</mo></mrow><mrow><mn>0</mn></mrow></msub></math></span>. Multi-Configuration Dirac-Fock calculation has been carried out for analysis. 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The spectral anomalies near the level-crossing are simulated by the atomic state-vector rotation. 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引用次数: 0

摘要

在类锗高电荷原子离子在Z=66处的原子序数Z依赖波长曲线中首次发现了三个能级的同时交叉。利用大螺旋器件(Large Helical Device, LHD)和EBIT获得了从4s或4p激发态跃迁到基态([Ni]4s24p−2)0的EUV发射波长。进行了多组态Dirac-Fock计算进行分析。三种激发态构型([Ni]4s24p−4d−)1、([Ni]4s4p−(4p+2)0)1和([Ni]4s4p−(4p+2)2)1之间的相互作用导致了原子态向量在构型空间中Z通过交叉点时的三维旋转。用四元数代数分析了原子态的z -演化。用原子态向量旋转模拟了平交附近的光谱异常。因此,通过共享光学允许的构型([Ni]4s24p−4d−)1的强度,光学不可见的态变得可见。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Z-dependent three-level simultaneous-crossing of excited states in germanium-like highly charged atomic ions
Simultaneous-crossing of three energy-levels has been found for the first time in the atomic number Z-dependent wavelength curves at Z=66 of Ge-like highly charged atomic ions. Large Helical Device (LHD) and EBIT are used for obtaining the wavelength of EUV emissions from the transitions of 4s or 4p excited states into their ground state ([Ni]4s24p2)0. Multi-Configuration Dirac-Fock calculation has been carried out for analysis. Interactions between the three excited-state configurations ([Ni]4s24p4d)1, ([Ni]4s4p(4p+2)0)1, and ([Ni]4s4p(4p+2)2)1 lead to the three-dimensional rotation of atomic state-vectors in the configuration space on the way for Z to pass the crossing point. Z-evolution of the atomic states has been analyzed employing the quaternion algebra. The spectral anomalies near the level-crossing are simulated by the atomic state-vector rotation. The optically invisible states are thus become visible by sharing the intensities of optically allowed configuration ([Ni]4s24p4d)1.
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来源期刊
Physics Letters A
Physics Letters A 物理-物理:综合
CiteScore
5.10
自引率
3.80%
发文量
493
审稿时长
30 days
期刊介绍: Physics Letters A offers an exciting publication outlet for novel and frontier physics. It encourages the submission of new research on: condensed matter physics, theoretical physics, nonlinear science, statistical physics, mathematical and computational physics, general and cross-disciplinary physics (including foundations), atomic, molecular and cluster physics, plasma and fluid physics, optical physics, biological physics and nanoscience. No articles on High Energy and Nuclear Physics are published in Physics Letters A. The journal''s high standard and wide dissemination ensures a broad readership amongst the physics community. Rapid publication times and flexible length restrictions give Physics Letters A the edge over other journals in the field.
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