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F–F A (Na) conversion by repetitive light pulses in additively coloured KCl crystals
Author(s) -
Mladenova M.,
Yankov R.,
Georgiev M.
Publication year - 1975
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220720239
Subject(s) - saturation (graph theory) , dissociation (chemistry) , rate equation , kinetics , atomic physics , materials science , thermal , frequency factor , ionization , energy conversion efficiency , activation energy , optics , analytical chemistry (journal) , chemistry , physics , thermodynamics , ion , optoelectronics , mathematics , organic chemistry , combinatorics , quantum mechanics , chromatography
The optical conversion of F centres to F A (Na) centres induced by repetitive light pulses is investigated above room temperature. The conversion kinetics is investigated as a function of the pulse intensity and repetition rate, as well as of the temperature. The dependence of the initial F A formation rate and the F A density at saturation are found to fit fairly the predictions of a F–F A conversion model in which the thermal dissociation of the ionized F A centre is rate determining. Data on the binding energy of the latter are obtained and subsequently discussed.