BETA-RAY IRRADIATION THERMOLUMINESCENCE AND DOSIMETRIC CHARACTERIZATION OF KCL1-XBRX-EU2-CRYSTALS( MIXED)

Thermoluminescence and dosimetric characterization of KCl1-xBrx:Eu2+ m ixed crystals exposed to beta-ray irradiation have been studied as a f unction of composition x in the mixed solid solution. Significant chan ges on its thermoluminescence properties and dosimetric behavior have been found concerning pure end KCl:Eu2+ and KBr:Eu2+ components. The r esults indicate a minimum thermoluminescence efficiency at about middl e composition. The addition of small amount (1.0%) of Br- ion io KCl i s more effective in producing a higher thermoluminescence efficiency a nd lower fading. It also enhances the linear response as a function of irradiation dose increasing greatly its application as an ionizing th ermoluminescence dosimeter. (C) 1998 Elsevier Science Ltd. All rights reserved.