Photon-induced thermal desorption of CO from small metal-carbonyl clusters

被引：0
|
作者：
Lüttgens, G. [1 ]
Pontius, N. [1 ]
Bechthold, P.S. [1 ]
Neeb, M. [1 ]
Eberhardt, W. [1 ]
机构：
[1] Inst. fur Festkorperforschung, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
来源：
Physical Review Letters | 2002年 / 88卷 / 07期
关键词：
Degrees of freedom (mechanics) - Desorption - Electron scattering - Ground state - Laser pulses - Photoelectron spectroscopy - Pumping (laser) - Rate constants - Relaxation processes;
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摘要：
Thermal desorption of CO from photoexcited free metal-carbonyl clusters was studied using two-color pump-probe photoelectron spectroscopy. A statistical Rice-Ramsperger-Kassel calculation using derived desorption rate constant was used to approximate the unimolecular CO-desorption thresholds of Au2(CO)- and Pt2(CO)5-. It was found that the desorption rate for the two clusters differ due to the different numbers of degree of freedom.
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页码：761021 / 761024
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