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Radiation Protection Dosimetry Advance Access published online on November 7, 2009
Radiation Protection Dosimetry, doi:10.1093/rpd/ncp258
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© The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

VALIDATION OF A METHOD FOR NEUTRON DOSIMETRY AND SPECTROMETRY USING NEUTRON ACTIVATION OF METAL DISCS

J. S. Elisabeth Wieslander1,2, Göran Lövestam1, Mikael Hult1,*, Andreas Fessler1, Joël Gasparro1 and Pierre Kockerols1

1 EC-JRC-IRMM, Institute for Reference Materials and Measurements, Retieseweg 111, B-2440 Geel, Belgium
2 Department of Physics, University of Jyväskylä, PO Box 35, FIN-40014, Finland

* Corresponding author: mikael.hult{at}ec.europa.eu

Received July 6, 2009, amended October 12, 2009, accepted October 15, 2009

A technique for neutron dosimetry and spectrometry based on neutron activation of different metal discs has been studied. After exposure to a neutron field, the radionuclides produced in the discs are detected using low-level gamma-ray spectrometry and the neutron spectrum is obtained using a spectrum unfolding technique. In order to validate the method, irradiation was performed in a well-characterised 252Cf neutron reference field. Furthermore, the detector was used to determine the neutron fluence rate and spectrum at a storage place for MOX nuclear fuel. The results of the two measurements are reported and discussed.


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