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 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.

HARADA H.;  KITATANI F.;  KOIZUMI M.;  TAKAMINE J.;  KURETA M.;  TSUTIYA H.;  IIMURA H.;  SEYA M.;  BECKER Björn;  KOPECKY Stefan;  SCHILLEBEECKX Peter; 

2014-10-08

ACADEMIC PRESS INC ELSEVIER SCIENCE

JRC91632

0090-3752,   

http://www.sciencedirect.com/science/article/pii/S0090375214001483,    http://dx.doi.org/10.1016/j.nds.2014.04.118,    https://publications.jrc.ec.europa.eu/repository/handle/JRC91632,   

10.1016/j.nds.2014.04.118,