COLOR-CENTERS IN LIBAF3

Authors
TALE I KULIS P ROGULIS U TALE V TROKSS J VEISPALS A BARBOZAFLORES M FITTING HJ
Citation
I. Tale et al., COLOR-CENTERS IN LIBAF3, Journal of luminescence, 72-4, 1997, pp. 722-723
Citations number
1
Categorie Soggetti
Optics
Journal title
Journal of luminescence → ACNP
ISSN journal
00222313
Volume
72-4
Year of publication
1997
Pages
722 - 723
Database
ISI
SICI code
0022-2313(1997)72-4:<722:CIL>2.0.ZU;2-W
Abstract
The X-ray-induced optical absorption (OA) and the spectra of magnetic circular dichroism (MCD) followed by optically detected EPR (ODEPR) ha ve been investigated in undoped LiBaF3 crystals. According to ODEPR, t he absorption bands in the spectral region 470-770 nm correspond to th e F-type centres, whereas the absorption band at 420 nm is assigned to the hole centres. The redistribution of electrons to the thermal more stable F-type centres indicates that all types of colour centres are annealed in the course of the thermal release of electrons from F-type centres. accompanied by a thermostimulated luminescence.