Complete two-electron spectra in double photoionization: The rare gases Ar, Kr, and Xe
Complete two-electron spectra in double photoionization: The rare gases Ar, Kr, and Xe
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DOI：
10.1103/physrevlett.90.053003
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发表时间：
2003-02-07
影响因子：
8.6
通讯作者：
Penent, F
中科院分区：
文献类型：
--
作者：
Eland, JHD;Vieuxmaire, O;Penent, F
提出了一种新的光谱技术，在单光子双光电离中给出完整的二维 e(-)-e(-) 符合光谱。该技术解析了双电荷离子的状态，并提供了形成每个最终双阳离子状态时发射的各个电子的光谱。已记录了光子能量高达 51 eV 的 Xe、Kr 和 Ar 双光电离的完整光谱。总体而言，令人惊讶的是，np(4) P-3、D-1 和 S-1 状态根据其统计权重进行填充。当排除明显的自电离作用时，所谓的受青睐的 P-3 态实际上并不受青睐。还提供了有关自动电离过程的详细信息。
A new spectroscopic technique, giving complete two-dimensional e(-)-e(-) coincidence spectra in single photon double photoionization, is presented. The technique resolves the states of doubly charged ions and provides spectra of the individual electrons emitted in formation of each final dication state. Complete spectra for double photoionization of Xe, Kr, and Ar at photon energies up to 51 eV have been recorded. Overall and surprisingly, the np(4) P-3, D-1, and S-1 states are populated according to their statistical weights. When the evident autoionization is excluded, the supposedly favored P-3 states are in fact disfavored. Detailed information on the autoionization processes is also made available.