GIANT-RESONANCES IN SILVER-CLUSTER PHOTOFRAGMENTATION

被引：161
作者：
TIGGESBAUMKER, J
KOLLER, L
LUTZ, HO
MEIWESBROER, KH
机构：
[1] Fakultät für Physik, Universität Bielefeld
来源：
CHEMICAL PHYSICS LETTERS | 1992年 / 190卷 / 1-2期
关键词：
D O I：
10.1016/0009-2614(92)86099-4
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：
The collinear ion-beam depletion technique is used to measure absolute photofragmentation cross sections of small silver-cluster ions in the range from 2.3 to 5.7 eV. Giant resonances are found which can be interpreted in terms of a collective electron oscillation. The optical spectra of spherical Ag9+ and Ag21+ show a large blue-shift of the resonance energy relative to the respective experimental surface value. For non-spherical clusters, a splitting of the giant resonance is found, in qualitative accordance with jellium calculations.
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页码：42 / 47
页数：6
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