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Radiation Protection Dosimetry Advance Access originally published online on April 27, 2006
Radiation Protection Dosimetry 2006 119(1-4):344-349; doi:10.1093/rpd/nci691
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

The sunlight OSL response of a commercially available {alpha}-Al2O3:C personnel dosimetry material

W. G. West*, K. J. Kearfott and S. M. Bernal

Department of Nuclear Engineering and Radiological Sciences, The University of Michigan, Ann Arbor, MI 48109-2104, USA

* Corresponding author: pilatus{at}umich.edu

Carbon-doped, anion-defective aluminium oxide has become a widely used and effective medium for personnel dosimetry applications using optically stimulated luminescence (OSL) techniques. Though the commercial products currently using this material employ light-tight packaging to prevent light-induced effects on the OSL signal, the material could be employed in environments where package integrity cannot be assured. This paper reports on the results of an experiment performed to quantify the effects of sunlight exposure on {alpha}-Al2O3:C. Samples of commercially available Luxel® material were exposed to carefully recorded levels of sunlight both before and after irradiations to determine the nature and magnitude of both activation and fading phenomena in this material. The results confirm that both fading and activation processes are seen in this material and indicate that the material reaches an equilibrium dose level in response to prolonged sunlight exposure equivalent to a dose of ~15 mGy under the experimental test conditions.


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