Thermoluminescence behaviour of KCL(1-x)Br(x):Pb2+ exposed to gamma radiation

Radiat Prot Dosimetry. 2006;119(1-4):280-4. doi: 10.1093/rpd/nci575. Epub 2006 Apr 27.

Abstract

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bromides / chemistry
  • Bromides / radiation effects
  • Computer Simulation
  • Dose-Response Relationship, Radiation
  • Equipment Design
  • Equipment Failure Analysis
  • Gamma Rays
  • Lead / chemistry
  • Lead / radiation effects
  • Light
  • Materials Testing
  • Models, Chemical*
  • Potassium Chloride / chemistry*
  • Potassium Chloride / radiation effects*
  • Radiation Dosage
  • Thermoluminescent Dosimetry / instrumentation*
  • Thermoluminescent Dosimetry / methods

Substances

  • Bromides
  • Lead
  • Potassium Chloride