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Journal Article

Ag8 fluorescence in argon

MPS-Authors
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Rabin,  Irene
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Schulze,  Wilfried
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Ertl,  Gerhard
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Félix, C., Sieber, C., Harbich, W., Buttet, J., Rabin, I., Schulze, W., et al. (2001). Ag8 fluorescence in argon. Physical Review Letters, 86(14), 2992-2995. doi:10.1103/PhysRevLett.86.2992.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-1878-7
Abstract
The fluorescence of Ag8 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 Ag8 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.