Optically Stimulated Luminescence Response of Al2O3 to Beta Radiation

1 September 1999

journal article
Published by Oxford University Press (OUP) in Radiation Protection Dosimetry

Vol. 85 (1) , 125-128
https://doi.org/10.1093/oxfordjournals.rpd.a032816

Abstract

High sensitivity dosemeters based on Al₂O₃:C have been prepared and tested for use as beta dosemeters using optically stimulated luminescence (OSL). Two types of sample were prepared and tested, namely unpolished thick, single crystal chips and thin powder layers on aluminium substrates. The samples were used in two OSL readout modes: (a) cw-OSL using a tungsten lamp, and (b) pulsed-OSL using a Nd:YAG laser. Comparisons were made with TL properties, where possible. The samples were irradiated using a variety of sources, including ¹⁴⁷Pm, ²⁰⁴Tl, ⁹⁰Sr-⁹⁰Y and ⁶⁰Co, and under a variety of cover thicknesses. The response per unit H_p(0.07), normalised to ⁶⁰Co, is compared for each dosemeter type and discussed within the framework of DOELAP and EU recommended limits.

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