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A study has been made of the feasibility to perform X-ray and gamma-ray spectroscopy on spent nuclear fuel and uranium solution and pellets, using a Peltier cooled CdZnTe crystal (9 mm{2} sensitive area, 2 mm thickness) coupled with a dedicated preamplifier and amplifier. In the case of spent fuel, an energy resolution of 5.6 keV at 662 keV was achieved and characterization of the fuel in terms of burnup and cooling time performed. The good energy resolution at low energies (1.9 keV at 122 keV) has allowed application of the URADOS code which, on the basis of the uranium XK(alpha)-rays determined the (235)U enrichment in the uranium solutions and pellets within 10% of that declared.

Additional information

Authors: ABBAS K, JRC Karlsruhe (DE);NICOLAOU G, JRC Karlsruhe (DE);MOREL J, CEA, CEN Saclay, Gif-sur-Yvette (FR);ETCHEVERRY M, CEA, CEN Saclay, Gif-sur-Yvette (FR)
Bibliographic Reference: Article: Nuclear Instruments and Methods in Physics Research (1997)
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