Vibrational autodetachment spectroscopy of Au−6 : Image‐charge‐bound states of a gold ring
Vibrational autodetachment spectroscopy of Au−6 : Image‐charge‐bound states of a gold ring
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Au−6 的振动自脱离光谱：金环的图像电荷束缚态
DOI：
10.1063/1.459378
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发表时间：
1990
影响因子：
4.4
通讯作者：
R. Smalley
中科院分区：
文献类型：
--
作者：
K. Taylor;C. Jin;J. Conceição;Lai‐Sheng Wang;O. Cheshnovsky;B. R. Johnson;P. Nordlander;R. Smalley
对金和银的质量选择性负团簇离子进行了光谱实验，在单光子光剥离阈值附近的波长范围内，Au−6团簇离子显示出独特的、分辨良好的光谱，由单一振动模式的级数组成。这个阈值光剥离光谱和相关的光电子能量分布的细节表明，基于Au−6团簇的非常弱的束缚激发电子态（由图像电荷力束缚）的完全对称振动能级的自动剥离，以平面的六重对称金环的形式进行解释。
Spectral experiments on mass‐selected negative cluster ions of gold and silver were performed in the wavelength range near the threshold for one‐photon photodetachment of the extra electron. The Au−6 cluster ion displayed a uniquely well resolved spectrum consisting of a progression in a single vibrational mode. Details of this threshold photodetachment spectrum and the associated photoelectron energy distribution suggest an explanation based on autodetachment from totally symmetric vibrational levels of very weakly bound excited electronic state (bound by image charge forces) of the Au−6 cluster in the form of a planar, six‐fold symmetric, gold ring.