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FIZIKA A 8 (1999) 1 , 1-10
 
TEMPORAL EVOLUTION OF INTERMETALLIC DIFFUSE BAND SPECTRA
IRENA LABAZAN, DAVORKA AZINOVIĆ, SREĆKO GOGIĆ and SLOBODAN
MILOŠEVIĆ
Institute of Physics, P.O.Box 304, HR-10000 Zagreb, Croatia
Received 10 December 1999; Accepted 24 May 1999
LiZn and LiCd vapour mixtures prepared in the heat-pipe oven are irradiated with pulsed
excimer laser emission at 308 nm. Temporal evolution of the fluorescence spectra is
observed showing that different processes occur such as multiphoton excitation,
collisional energy transfer, photochemical reaction, relaxation etc. Temporal change of
the LiZn and LiCd blue-green diffuse bands spectral shape is observed and interpreted in
terms of previous spectral simulations. The effective lifetimes of different spectral
features are determined.
PACS numbers: 33.10.-n, 33.20.Kf, 33.80.Gj
UDC 539.194, 539.196
Keywords: LiZn - LiCd vapour mixtures, pulsed excimer laser irradiation, temporal
evolution of fluorescence spectra, multiphoton excitation, collisional energy transfer,
photochemical reaction, relaxation, effective lifetimes
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