Thermoluminescence Centres Created Selectively in MgO Crystals by Fast Neutrons

A possibility of using the thermoluminescent detection of collision-created interstitial centres in MgO by the TL peak at 700 K, arising at the radiative recombination of anion interstitials with F+ centres, for the selective detection of fast neutrons in mixed neutron-gamma fields, is examined. Sel...

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Bibliographic Details
Published in:Radiation protection dosimetry 2002-01, Vol.100 (1-4), p.127-130
Main Authors: Dolgov, S., Kärner, T., Lushchik, A., Maaroos, A., Mironova-Ulmane, N., Nakonechnyi, S.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Fast Neutrons
Magnesium Oxide - chemistry
Magnesium Oxide - radiation effects
Medical sciences
Radiochemistry
Thermoluminescent Dosimetry - methods
Thermoluminescent Dosimetry - statistics & numerical data
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Summary:A possibility of using the thermoluminescent detection of collision-created interstitial centres in MgO by the TL peak at 700 K, arising at the radiative recombination of anion interstitials with F+ centres, for the selective detection of fast neutrons in mixed neutron-gamma fields, is examined. Selectivity and sensitivity of such a detector are discussed. For the present time, the sensitivity of the thermoluminescent detection of anion interstitials created by neutron irradiation is comparable to that of the EPR detection of F+ centres, the main limitations of the thermoluminescence method being connected with the background thermoluminescence and absence of suitable luminescence centres in this temperature region, when undoped and untreated MgO crystals are used. Possible ways to overcome these shortcomings are discussed.
ISSN:0144-8420
1742-3406
DOI:10.1093/oxfordjournals.rpd.a005828