Observation of an Electric Quadrupole Transition in a Negative Ion: Experiment and Theory
Observation of an Electric Quadrupole Transition in a Negative Ion: Experiment and Theory
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负离子中电四极跃迁的观察：实验与理论
DOI：
10.1103/physrevlett.126.083001
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发表时间：
2021
影响因子：
8.6
通讯作者：
Safronova, M. S.
中科院分区：
文献类型：
--
作者：
Walter, C. W.;Spielman, S. E.;Ponce, R.;Gibson, N. D.;Yukich, J. N.;Cheung, C.;Safronova, M. S.
首次在实验上直接观察到原子负离子束缚态间的电四极（）吸收跃迁。在铋的负离子中观察到共振光子脱离激发的跃迁。跃迁性质是完全独立的计算使用混合理论的方法来解释强的多级电子相互作用和相对论效应。实验和ab initiotheorical结果是非常一致的，提供了宝贵的新的洞察这个复杂的系统和禁戒跃迁的负离子更普遍。
The first direct experimental observation of an electric quadrupole () absorption transition between bound states of an atomic negative ion has been made. The transition was observed in the negative ion of bismuth by resonant () photon detachment fromviaexcitation. Thetransition properties were completely independently calculated using a hybrid theoretical approach to account for the strong multilevel electron interactions and relativistic effects. The experimental andab initiotheoretical results are in excellent agreement, providing valuable new insight into this complex system and forbidden transitions in negative ions more generally.