Plasmon enhanced electron and atom emission from a spherical sodium cluster: Na-91(-)

被引:25
作者
Reiners, T
Haberland, H
机构
[1] Fakultät für Physik, Universität Freiburg, Freiburg, D-79104
关键词
D O I
10.1103/PhysRevLett.77.2440
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The photoabsorption cross section of the negatively charged, spherical Na-91(-) cluster shows a broad collective resonance at h omega = 1.65 eV, the decay of which can lead to two final channels: atom and electron emission. The branching ratio between the two channels was measured to increase linearly with photon energy over the unexpectedly broad energy range of 1.2 eV, which is attributed to the cluster's incipient valence band width. The femtosecond time scales of the processes involved are discussed.
引用
收藏
页码:2440 / 2443
页数:4
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