Picosecond ground state recovery of the F-center in RbCl, KCl and KBr
作者:
Jan De Kinder,
Wim Joosen,
Dirk Schoemaker**,
期刊:
Radiation Effects and Defects in Solids
(Taylor Available online 1991)
卷期:
Volume 119-121,
issue 1
页码: 369-374
ISSN:1042-0150
年代: 1991
DOI:10.1080/10420159108224903
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Optical pump-probe measurements on the F-center in RbCl, KCl and KBr show a ps ground state recovery, when a substantial number of F-aggregates is present. The observed de-excitation process becomes faster for a larger concentration of aggregate centers and is related to energy transfer from the excited state of the F-center to aggregate centers. This energy transfer occurs towards F2- and N-centers in KCl. Our results are in accordance with measurements of the quantum efficiency of the F-center luminescence and with transient absorption measurements.
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