Neutron Resonance Densitometry for Particle-like Debris of Melted Fuel

Neutron Resonance Densitometry (NRD) is proposed for the quantification of nuclear materials in particle-like debris of melted fuel from the reactors of the Fukushima Daiichi nuclear power plant. The method is based on a combination of neutron resonance transmission analysis (NRTA) and neutron reson...

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Bibliographic Details
Published in:Nuclear data sheets 2014-04, Vol.118, p.502-504
Main Authors: Harada, H., Kitatani, F., Koizumi, M., Takamine, J., Kureta, M., Tsutiya, H., Iimura, H., Seya, M., Becker, B., Kopecky, S., Schillebeeckx, P.
Format: Article
Language:English
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Summary:Neutron Resonance Densitometry (NRD) is proposed for the quantification of nuclear materials in particle-like debris of melted fuel from the reactors of the Fukushima Daiichi nuclear power plant. The method is based on a combination of neutron resonance transmission analysis (NRTA) and neutron resonance capture analysis (NRCA). It uses the neutron time-of-flight (TOF) technique with a pulsed white neutron source and a neutron flight path as short as 5 m. The spectrometer for NRCA is made of LaBr3(Ce) detectors. The achievable uncertainty due to only counting statistics is less than 1 % to determine Pu and U isotopes.
ISSN:0090-3752
1095-9904
DOI:10.1016/j.nds.2014.04.118