Decay channel dependence of the photoelectron angular distributions in core-level ionization of Ne dimers.
Decay channel dependence of the photoelectron angular distributions in core-level ionization of Ne dimers.
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DOI：
10.1103/physrevlett.101.043004
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发表时间：
2008-07
影响因子：
8.6
通讯作者：
M. Yamazaki;J. Adachi;Y. Kimura;A. Yagishita;M. Stener;P. Decleva;N. Kosugi;H. Iwayama;K. Nagaya;M. Yao
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文献类型：
--
作者：
M. Yamazaki;J. Adachi;Y. Kimura;A. Yagishita;M. Stener;P. Decleva;N. Kosugi;H. Iwayama;K. Nagaya;M. Yao
对于氖二聚体的K壳层光电离，我们报道了Ne ~（2+）+Ne ~+和Ne ~（2+）+Ne ~+通道的Ne ~ 1 s光电子角分布，它们表现出完全不同的模式。前者的非反转对称模式得到的快速原子间库仑衰变的俄歇末态的核心空穴本地化的直接证据。偶极模式的其他俄歇末态的缓慢辐射衰减得到的后者清楚地表明，辐射过程是足够慢，让双阳离子二聚体旋转多次之前碎裂。
For K-shell photoionization of neon dimers, we report Ne 1s photoelectron angular distributions for Ne2++Ne+ and Ne++Ne+ channels exhibiting quite different patterns. Noninversion-symmetric patterns of the former obtained by the fast interatomic Coulombic decay of Auger final states show direct evidence of core-hole localization. Dipolar patterns of the latter obtained by the slow radiative decay of the other Auger final states clearly show that the radiative process is slow enough to allow dicationic dimers to rotate many times before fragmentation.