Defects generated by irradiation with gamma rays in lead doped KCl-KBr mixed single crystals

摘要

In this work we report the behavior of solid solutions of lead-doped KCl-KBr mixed single crystals subjected to gamma irradiation. Various composition of KCl1-xBrx (x = 0,02, 0.35, 0.50, 0.65, 0.85) doped with 20-40 ppm of Pb2+ were used and exposed to ionizing radiation. The defect production seems to be correlated with the observed increasing integrated thermoluminescence glow curve as a function of irradiation at high 10 kGy dose as well as in the low 2.2-130 dose Gy range. The analysis shows the potential use of these mixed crystals as radiation detector. The defects generated by irradiation were monitored by the optical absorption spectrum and the thermally stimulated luminescence. (C) 2003 Elsevier Ltd. All rights reserved.