OPTICAL-EXCITATION IN SMALL IONIZED SODIUM CLUSTERS - CLOSED-SHELL AND OPEN-SHELL SYSTEMS

被引：75
作者：
BRECHIGNAC, C
CAHUZAC, P
CARLIER, F
DEFRUTOS, M
LEYGNIER, J
机构：
[1] Laboratoire Aimé-Cotton, CNRS II, 91405 Orsay Cedex
来源：
CHEMICAL PHYSICS LETTERS | 1992年 / 189卷 / 01期
关键词：
D O I：
10.1016/0009-2614(92)85148-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Photoabsorption cross-section profiles have been obtained for closed-shell and open-shell ionized size-selected sodium clusters Na9+, Na-21+ and Na11+. The spill-out of the valence electron cloud explains the red-shifted collective excitation frequency with regard to the Mie frequency. Quantum-mechanical calculations may give energy positions of the resonant structures consistent with the experiment. However, the absolute parameters of the profiles suggest that some oscillator strength is missing.
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页码：28 / 34
页数：7
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