Two types of f-centers in BaFBr

Optical absorption spectra and stimulation spectra of BaFBr and BaFBr:Eu single crystals measured with polarized light show the position of the absorption bands at 298K, F(Br-): λ E = 510nm, λ E⊥ c ≮ = 580nm; F(F-): λ E c ≮ = 535–540nm, λ E⊥≮ = 490nm . In addition, thermoluminescence and stimulatio...

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Bibliographic Details
Published in:Journal of luminescence 1988, Vol.40, p.323-324
Main Authors: Ye, Biao, Lin, Jian-Hua, Su, Mian-Zeng
Format: Article
Language:English
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Summary:Optical absorption spectra and stimulation spectra of BaFBr and BaFBr:Eu single crystals measured with polarized light show the position of the absorption bands at 298K, F(Br-): λ E = 510nm, λ E⊥ c ≮ = 580nm; F(F-): λ E c ≮ = 535–540nm, λ E⊥≮ = 490nm . In addition, thermoluminescence and stimulation spectra of x-irradiated BaFBr are studied by thermal cleaning technique. The trap depth and frequency factor of 365K are calculated employing various methods. The two peaks at 365K and 414K are associated with F(F-) centers respectively.
ISSN:0022-2313
1872-7883
DOI:10.1016/0022-2313(88)90214-1