Electronic, vibrational and configurational relaxation of the F-H(OH-) center

被引:2
|
作者
Gustin, E
Leblans, M
Bouwen, A
Schoemaker, D
机构
关键词
F-center; aggregate centers; energy transfer; radiationless relaxation; F-CENTER LUMINESCENCE; MOLECULAR DEFECTS; ALKALI-HALIDES;
D O I
10.4028/www.scientific.net/MSF.239-241.465
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The relaxation after optical excitation of F-H(OH-) centers in alkali halides is studied with a technique for time-resolved induced transparency measurements. A fast electronic relaxation, within a few picoseconds, is observed. A slower, strongly temperature-dependent component is identified as the restoration of thermal equilibrium between the configurations of the F-H center A third component is attributed to the vibrational relaxation of the OH- stretch vibration, which is excited by E-V energy transfer during the electronic relaxation.
引用
收藏
页码:465 / 468
页数:4
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