Thermoluminescence behaviour of KCL(1-x)Br(x):Pb2+ exposed to gamma radiation.
The thermoluminescence (TL) behaviour of solid solutions of lead doped KCl(1-x)Br(x) (X = 0.02, 0.35, 0.50, 0.65, 0.85, 1) mixed crystals exposed to gamma radiation at different doses from 60Co is reported. The TL glow curves of KCl(1-x)Br(x):Pb2+ crystal exposed in the range of 0-140 Gy is strongly dependent on composition X. The maximum temperature of the main TL glow peak was found to shift towards lower temperatures as composition X increased and a significant enhancement of the TL efficiency in KCl(1-x)Br(x):Pb2+ was found for X = 0.50 which is attributed to an increase in the vacancy concentration of the mixed halides at middle composition. The participation of the F-centre in the TL phenomenon particularly related to the main TL glow peak observed in mixed samples was also confirmed.
Cruz-Zaragoza
E
E
Instituto de Ciencias Nucleares, UNAM, Apdo. Postal 70-543, México D. F., México.
Barboza-Flores
M
M
Chernov
V
V
Ramos
S
S
Hernández
A J
AJ
Murrieta
S H
SH
D001965:Bromides / Q000737:chemistry / Q000528:radiation effects; D003198:Computer Simulation; D004307:Dose-Response Relationship, Radiation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005720:Gamma Rays; D007854:Lead / Q000737:chemistry / Q000528:radiation effects; D008027:Light; D008422:Materials Testing; D008956:Models, Chemical; D011189:Potassium Chloride / Q000737:chemistry* / Q000528:radiation effects*; D011829:Radiation Dosage; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods
D001965:Bromides; D007854:Lead; D011189:Potassium Chloride