DocumentCode :
10543
Title :
Influence of Thermal and Optical Treatments on the OSL Response of 
Pellets Using Blue Light Stimulation
Author :
Yoshizumi, M.T. ; Xavier, Miguel ; Caldas, L.V.E.
Author_Institution :
Inst. de Pesquisas Energeticas e Nucl., Comissao Nac. de Energia Nucl., Sao Paulo, Brazil
Volume :
60
Issue :
2
fYear :
2013
fDate :
Apr-13
Firstpage :
979
Lastpage :
982
Abstract :
This work presents a study of the OSL residual signal of Al2O3:C pellets after different annealing/bleaching treatments. It is shown that this luminescent material has deep trapping centers which are not associated with the TL main peaks and they are not completely emptied with an annealing up to 800°C . This fact was noticed when using blue light for the OSL stimulation. Optical bleaching using high power LEDs (blue, green and white) demonstrated that lower energies (green) result into higher residual OSL signal; and bleaching with similar energy (of that used for stimulation) shows better results.
Keywords :
alumina; annealing; carbon; doping; heat treatment; light emitting diodes; optical saturable absorption; photoluminescence; thermoluminescent dosimeters; Al2O3:C; Al2O3:C pellets; OSL response; TL main peaks; annealing treatments; bleaching treatments; blue light stimulation; high power LEDs; luminescent material; optical bleaching; optical treatments; thermal treatments; Annealing; Bleaching; Green products; Light emitting diodes; Optical sensors; Sea measurements; Stimulated emission; ${hbox{Al}}_{2}{hbox{O}}_{3}!!:!!{hbox{C}}$ ; annealing; optical bleaching; optically stimulated luminescence;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.2012.2228502
Filename :
6410465
Link To Document :
