Radiation Protection Dosimetry 2002-01-01

Thermoluminescence of photostimulable materials after X irradiation below room temperature.

S Nakamura, H Iwasa, T Kurobori, K Inabe

Index: Radiat. Prot. Dosimetry 100(1-4) , 395-8, (2002)

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Abstract

Thermoluminescence glow peaks in the temperature range 100 to 400 K are investigated for BaFX (X = Cl, Br) crystals after X irradiation at 100 K. A prominent glow peak of BaFCl around 210 K is found to be composed of a few recombination roots, that is, the peak corresponds to the recombination of hole trapped centres such as an O- centre and a dissociated Cl2- centre with the F (F-) centre and the O2--F(Cl-) pair defect. Another small glow peak around 270 K is likely to occur from thermal dissociation of the O2- -F(Cl-) pair defect. The main glow peak of BaFBr:O2- at 170 K may be attributed to a recombination of an O- centre with the F(Br-) centre.