Characterization of an optically stimulated luminescence (OSL) material for thermal neutron detection: SrS:Ce,Sm,B
✍ Scribed by Benoit, David ;Ravotti, Federico ;Garcia, Pierre ;Prevost, Hildegarde ;Lapraz, Dominique ;Vaillé, Jean-Roch ;Dusseau, Laurent
- Book ID
- 105364561
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 533 KB
- Volume
- 205
- Category
- Article
- ISSN
- 0031-8965
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✦ Synopsis
Abstract
SrS:Ce,Sm exhibits some interesting phosphorescent and charge storage properties that are used in OSL (optically stimulated luminescence) radiation dosimetry. To enhance the thermal neutron sensitivity of this phosphor, a new material obtained by boron doping has been developed. This OSL, B material was analysed with respect to its optical and structural characteristics in order to study possible modifications induced by doping procedure. Optical study highlights a decrease in the material luminescence of about 40% with TL and OSL experiments. The emission spectrum remains the same after boron addition. This result is in agreement with the structural characterization analysis since the lattice parameters were not modified. 11B MAS NMR results indicate that boron atoms are present in the host lattice in form of BO4 groups. Consequences on dosimetry applications are discussed. The neutron response of the OSL, B irradiated in a nuclear reactor is linear up to a fluence of 5 × 1011 cm^–2^ and it is possible to separate the thermal neutron and gamma components. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)