Electron-ion-coincidence spectra of K-shell excited Ne, Ar, and Kr clusters.

Electron-ion-coincidence spectra of K-shell excited Ne, Ar, and Kr clusters.
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K 壳层激发的 Ne、Ar 和 Kr 团簇的电子-离子符合光谱。

DOI:
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发表时间:
2007
影响因子:
4.4
通讯作者:
M. Yao
M. Yao
中科院分区:
化学2区
文献类型:
--
作者:
H. Murakami;K. Nagaya;Y. Ohmasa;H. Iwayama;M. Yao

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利用硬X射线波荡器光束线记录了K壳层激发的氪、氩和氖团簇的电子-离子符合谱,其尺寸范围从1个原子到约3000个原子。多电荷离子Rz+(z ≥ 2)和单电荷离子Rn+(n ≥ 1)作为团簇碎片被观察到,它们的相对丰度表现出与团簇平均尺寸N的特征依赖关系。从这些结果可以预期,在团簇表面上产生的电荷是强烈的本地化,而那些在团簇核心是离域。估算的电荷分离距离随着N的增加而增加,并且对于较轻的元素,它更长。
Electron-ion-coincidence spectra were recorded for K-shell excited krypton, argon, and neon clusters covering the size range from 1 atom to about 3000 atoms by utilizing hard x-ray undulator beamlines. Multiply charged ions Rz+(z>or=2) and singly charged ions Rn+(n>or=1) are observed as cluster fragments, and their relative abundance exhibits a characteristic dependence on the average cluster size N. It is expected from these results that the charges generated on the cluster surface are strongly localized while those in the cluster core are more delocalized. The estimated charge separation distance increases with N, and it is longer for lighter elements.
DOI: 10.1103/physrevlett.90.203401
发表时间: 2003-05-23
影响因子: 8.6
作者:
Marburger, S;Kugeler, O;Möller, T
通讯作者: Möller, T