Core effect in the Stark spectrum of highly excited barium

Core effect in the Stark spectrum of highly excited barium
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高激发钡斯塔克光谱中的核心效应

DOI:
10.1088/0031-8949/87/03/035301
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发表时间:
2013-03
期刊:
影响因子:
2.9
通讯作者:
Liu, Hong-Ping
Liu, Hong-Ping
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Cheng, Hong;Cheng, Hong;Liu, Hong-Ping;Liu, Hong-Ping

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我们从实验和理论上研究了高激发态Ba2+的斯塔克谱。通过引入核心效应的哈密顿量的对角化,很好地解释了观察到的光谱。通过检查Ba2+的Stark图谱以及直接比较氢和Ba2+的Stark谱来研究核效应。史塔克的地图揭示了一种反穿越。P态相邻通道之间的核诱导相互作用导致能级反交叉,提供了一种在自由场中无法进入的邻态填充的有效方法。
We have studied the Stark spectrum of highly excited barium both experimentally and theoretically. The observed spectra are well explained by diagonalization of the Hamiltonian incorporating core effects. Core effects were studied by examining the Stark maps of barium as well as by comparing Stark spectra of hydrogen and barium directly. An anti-crossing is revealed by the Stark maps. The core-induced interaction between the neighboring channels of p state results in level anti-crossing, providing an efficient way of populating the neighboring states inaccessible at free field.
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