GIANT-RESONANCES IN SILVER-CLUSTER PHOTOFRAGMENTATION
GIANT-RESONANCES IN SILVER-CLUSTER PHOTOFRAGMENTATION
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DOI：
10.1016/0009-2614(92)86099-4
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发表时间：
1992-02-28
影响因子：
2.8
通讯作者：
MEIWESBROER, KH
中科院分区：
文献类型：
--
作者：
TIGGESBAUMKER, J;KOLLER, L;MEIWESBROER, KH
用共线离子束耗尽技术测量了2.3 ~ 5.7eV范围内的小团簇银离子的绝对光致碎裂截面。巨共振被发现，这可以解释在一个集体电子振荡。球形Ag ~（9+）和Ag ~（21+）的光谱显示出相对于各自的实验表面值的共振能的大的蓝移。对于非球形的集群，分裂的巨共振被发现，在定性与jeldom计算。
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.