Determination of the optical constants of the photostimulable BaFCl : Eu2+and KCl : Eu2+ crystals

Authors
Kurobori, T Kozake, S Hirose, Y Ohmi, M Haruna, M Kimura, T Inabe, K Somaiah, K
Citation
T. Kurobori et al., Determination of the optical constants of the photostimulable BaFCl : Eu2+and KCl : Eu2+ crystals, JPN J A P 1, 38(2A), 1999, pp. 901-904
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS → ACNP
Volume
38
Issue
2A
Year of publication
1999
Pages
901 - 904
Database
ISI
SICI code
Abstract
A new method to determine the concentration of the defect centers in photos timurable luminescent materials is demonstrated. The method is representati vely applied to BaFCl:Eu2+ and KCl:Eu2+ single crystals, which exhibt the p hotostimulable luminescence. Thereby the values of the oscillator strength, f, are calculated utilizing the results of the defect center concentration s as well as the measured refractive indices and the corresponding absorpti on bands by using the Smakula's formula. The values obtained are f = 0.80 f or the F(Cl-) centers in BaFCl:Eu2+ and f = 0.60 for the F centers in KCl:E u2+.