Ag8 fluorescence in argon

被引：128

作者：

Félix, C ^{[1
]}

Sieber, C

Harbich, W

Buttet, J

Rabin, I

Schulze, W

Ertl, G

机构：

[1] Ecole Polytech Fed Lausanne, Inst Phys Expt, CH-1015 Lausanne, Switzerland

[2] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.86.2992

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The florescence of Ag-8 in an argon matrix and in argon droplets is reported. This is the first unambiguous assignment of the fluorescence of a metal cluster larger than the tetramer, indicating that the excited state lifetime is longer than previously thought. It is discussed as a possible result of a matrix cage effect. The excitation spectrum is compared with two-photon-ionization measurements of Ag-8 in helium droplets and to known absorption data. The agreement is excellent. We propose that the excited states relax rapidly through vibrational coupling to a long-lived state, from which the fluorescence occurs.

引用

页码：2992 / 2995

页数：4

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