Thermoluminescent characteristics of LiKYF5:Pr3+ and KYF4:Tm3 crystals for applications in neutron and gamma dosimetry

Radiat Prot Dosimetry. 2002;100(1-4):221-4. doi: 10.1093/oxfordjournals.rpd.a005851.

Abstract

Thermoluminescent (TL) properties of two concentration series lithium potassium yttrium fluoride doped with praseodymium (LiKYF5:Pr3+) and potassium yttrium fluoride doped with thulium (KYF4:Tm3+) have been investigated after gamma and neutron irradiation. The main purpose of this research is to see whether these materials are suitable for gamma and/or neutron dosimetry purposes. It has been found that the compounds of both series are sensitive to 60Co gamma radiation. A maximal TL sensitivity is found for LiKY0.99Pr0.01F5 and KY0.99Tm0.01F4. However, for this doping level the intensity of the TL glow peak is about 7 times less than that for LiF:Mg,Ti (TLD-700). The TL sensitivity to thermal neutrons is relatively higher than that to 60Co photons. No TL sensitivity to fast neutrons was observed.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallization
  • Fluorides / chemistry
  • Fluorides / radiation effects
  • Gamma Rays
  • Lithium Compounds / chemistry
  • Lithium Compounds / radiation effects
  • Neutrons
  • Photons
  • Potassium Compounds / chemistry
  • Potassium Compounds / radiation effects
  • Praseodymium / chemistry
  • Radiochemistry
  • Sensitivity and Specificity
  • Thermoluminescent Dosimetry / methods*
  • Thermoluminescent Dosimetry / statistics & numerical data
  • Thulium / chemistry
  • Yttrium / chemistry
  • Yttrium / radiation effects

Substances

  • Lithium Compounds
  • Potassium Compounds
  • lithium fluoride
  • Yttrium
  • Thulium
  • potassium fluoride
  • Praseodymium
  • Fluorides