INFRARED MULTIPHOTON EXCITATION OF REFRACTORY-METAL CLUSTERS

Authors
ATHANASSENAS K LEISNER T FRENZEL U KREISLE D RECKNAGEL E
Citation
K. Athanassenas et al., INFRARED MULTIPHOTON EXCITATION OF REFRACTORY-METAL CLUSTERS, Zeitschrift fur Physik. D, Atoms, molecules and clusters, 26, 1993, pp. 153-155
Citations number
15
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Zeitschrift fur Physik. D, Atoms, molecules and clusters → ACNP
ISSN journal
01787683
Volume
26
Year of publication
1993
Supplement
S
Pages
153 - 155
Database
ISI
SICI code
0178-7683(1993)26:<153:IMEORC>2.0.ZU;2-C
Abstract
Photoexcitation and photoionization experiments on small Tungsten and Niobium clusters were performed with a Q-switched Nd:YAG laser (1064 n m) and a reflectron type time-of-flight mass spectrometer. For low las er fluences the monomer and very small clusters do not show up in the mass spectra. Furthermore, the detected cluster ions show very asymmet ric peak shapes caused by delayed ionization (thermionic emission). Fo r high photon fluences photoions with up to charge state +3 could be d etected.