Thermoluminescent characteristics of LiKYF5:Pr3+ and KYF4:Tm3 crystals for applications in neutron and gamma dosimetry.
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.
Coeck
M
M
SCK-CEN, Belgian Nuclear Research Centre, Mol. mcoeck@sckcen.be
Vanhavere
F
F
Khaidukov
N
N
D003460:Crystallization; D005459:Fluorides / Q000737:chemistry / Q000528:radiation effects; D005720:Gamma Rays; D018020:Lithium Compounds / Q000737:chemistry / Q000528:radiation effects; D009502:Neutrons; D017785:Photons; D017680:Potassium Compounds / Q000737:chemistry / Q000528:radiation effects; D011221:Praseodymium / Q000737:chemistry; D011854:Radiochemistry; D012680:Sensitivity and Specificity; D013819:Thermoluminescent Dosimetry / Q000379:methods* / Q000706:statistics & numerical data; D013932:Thulium / Q000737:chemistry; D015019:Yttrium / Q000737:chemistry / Q000528:radiation effects
D018020:Lithium Compounds; D017680:Potassium Compounds; C027651:lithium fluoride; D015019:Yttrium; D013932:Thulium; C033320:potassium fluoride; D011221:Praseodymium; D005459:Fluorides