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Direct or photostimulated luminescence after X-Ray irradiation of divalent europium in alkaline earth compounds containing some halides; Luminescence directe ou photostimulee apres irradiation X de l'europium divalent dans des familles de composes alcalino-terreux comportant un halogene

Abstract

With a view for digitizing of radiological images, the luminescent properties of divalent europium in diverse halogen compounds involving strontium or barium have been studied. In halogen-rich compounds (MCl{sub 2}, M{sub 4}OCl{sub 6}, M{sub 5}SiO{sub 4}Cl{sub 6},... where M is Sr or Ba), the thermal extinction of the emission begins only above 300 K. High densities of coloured spots have been produced with X-ray irradiation. The combining of these 2 features has led to the obtention of high yields for argon laser stimulated luminescence in the case of Sr{sub 5}SiO{sub 4}Cl{sub 5}Br:Eu halogen silicate. Although these yields are high they stay below that of BaXF:Eu which is usually used in photon-stimulated screens.
Authors:
Publication Date:
Oct 15, 1990
Product Type:
Thesis/Dissertation
Report Number:
FRNC-TH-7147
Resource Relation:
Other Information: TH: These sciences des materiaux; 35 refs.; Also available from Bibliotheque Universitaire des Sciences et Techniques - S.C.D. DE Bordeaux 1, Allee Baudrimont, 33405 - Talence Cedex (France)
Subject:
36 MATERIALS SCIENCE; EUROPIUM; HALOGEN COMPOUNDS; PHOTOLUMINESCENCE; STIMULATED EMISSION; TEMPERATURE DEPENDENCE; YIELDS
OSTI ID:
21000817
Research Organizations:
Bordeaux-1 Univ., 33 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR0703978025683
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
152 pages
Announcement Date:
Apr 14, 2008

Citation Formats

Merigou, C. Direct or photostimulated luminescence after X-Ray irradiation of divalent europium in alkaline earth compounds containing some halides; Luminescence directe ou photostimulee apres irradiation X de l'europium divalent dans des familles de composes alcalino-terreux comportant un halogene. France: N. p., 1990. Web.
Merigou, C. Direct or photostimulated luminescence after X-Ray irradiation of divalent europium in alkaline earth compounds containing some halides; Luminescence directe ou photostimulee apres irradiation X de l'europium divalent dans des familles de composes alcalino-terreux comportant un halogene. France.
Merigou, C. 1990. "Direct or photostimulated luminescence after X-Ray irradiation of divalent europium in alkaline earth compounds containing some halides; Luminescence directe ou photostimulee apres irradiation X de l'europium divalent dans des familles de composes alcalino-terreux comportant un halogene." France.
@misc{etde_21000817,
title = {Direct or photostimulated luminescence after X-Ray irradiation of divalent europium in alkaline earth compounds containing some halides; Luminescence directe ou photostimulee apres irradiation X de l'europium divalent dans des familles de composes alcalino-terreux comportant un halogene}
author = {Merigou, C}
abstractNote = {With a view for digitizing of radiological images, the luminescent properties of divalent europium in diverse halogen compounds involving strontium or barium have been studied. In halogen-rich compounds (MCl{sub 2}, M{sub 4}OCl{sub 6}, M{sub 5}SiO{sub 4}Cl{sub 6},... where M is Sr or Ba), the thermal extinction of the emission begins only above 300 K. High densities of coloured spots have been produced with X-ray irradiation. The combining of these 2 features has led to the obtention of high yields for argon laser stimulated luminescence in the case of Sr{sub 5}SiO{sub 4}Cl{sub 5}Br:Eu halogen silicate. Although these yields are high they stay below that of BaXF:Eu which is usually used in photon-stimulated screens.}
place = {France}
year = {1990}
month = {Oct}
}