Inner-shell photodetachment from the K− ion
Inner-shell photodetachment from the K− ion
复制标题
内壳与 K− 离子的光脱离
DOI：
10.1088/0953-4075/40/5/009
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
D. J. Pegg
中科院分区：
文献类型：
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作者：
A. Covington;R. Kraus;E. Emmons;S. Duvvuri;V. Davis;D. Calabrese;D. Davis;C. Cisneros;A. Schlachter;M. Gulley;D. Hanstorp;J. Thompson;D. J. Pegg
在21-24.5eV的光子能量范围内，我们测量了K−+h−K++2eν→过程中K−离子光剥离的相对截面。测量截面中的结构与涉及3P核电子的脱离或激发的相关过程有关，该过程通常伴随着一个或多个价电子的激发。截面上最显著的特征是由3P电子和4S价电子激发产生的强共振。正如以前对价电子双激发的实验一样，电子关联被认为在负离子的动力学中起着重要作用。
We have measured the relative cross section for photodetachment from the K− ion for the process K− + hν→ K+ + 2e− over the photon energy range 21– 24.5 eV. The structures in the measured cross section are associated with correlated processes involving the detachment or excitation of a 3p core electron, processes which are often accompanied by the excitation of one or more valence electrons. The most prominent feature in the cross section is a strong resonance arising from the excitation of a 3p electron from the core and a 4s valence electron. As in previous experiments on double excitation of valence electrons, electron correlation is seen to play an important role in the dynamics of negative ions.