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

Identifieur interne : 000673 ( PubMed/Checkpoint ); précédent : 000672; suivant : 000674

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

Auteurs : M. Coeck [Belgique] ; F. Vanhavere ; N. Khaidukov

Source :

RBID : pubmed:12382864

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English descriptors

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.

PubMed: 12382864


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<term>Gamma Rays</term>
<term>Lithium Compounds (chemistry)</term>
<term>Lithium Compounds (radiation effects)</term>
<term>Neutrons</term>
<term>Photons</term>
<term>Potassium Compounds (chemistry)</term>
<term>Potassium Compounds (radiation effects)</term>
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<term>Thermoluminescent Dosimetry (methods)</term>
<term>Thermoluminescent Dosimetry (statistics & numerical data)</term>
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<term>Composés du lithium ()</term>
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<term>Composés du potassium (effets des radiations)</term>
<term>Cristallisation</term>
<term>Dosimétrie thermoluminescente ()</term>
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<term>Fluorures (effets des radiations)</term>
<term>Neutrons</term>
<term>Photons</term>
<term>Praséodyme ()</term>
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<term>Fluorides</term>
<term>Lithium Compounds</term>
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<term>Praseodymium</term>
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<term>Yttrium</term>
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<term>Fluorides</term>
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<term>Yttrium</term>
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<term>Composés du lithium</term>
<term>Composés du potassium</term>
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<term>Neutrons</term>
<term>Photons</term>
<term>Praséodyme</term>
<term>Radiochimie</term>
<term>Rayons gamma</term>
<term>Sensibilité et spécificité</term>
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<div type="abstract" xml:lang="en">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.</div>
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