Title: Proposal of neutron resonance densitometry for particle like debris of melted fuel using NRTA and NRCA
Authors: HARADA HiroshiKITATANI F.KOIZUMI M.TSUCHIYA H.TAKAMINE J.KURETA M.IIMURA H.SEYA M.BECKER BJÖRNKOPECKY StefanSCHILLEBEECKX Peter
Citation: ESARDA Proceedings p. Submission 33 [6 pages]
Publisher: ESARDA and the Joint Research Centre of the European Commission
Publication Year: 2013
JRC N°: JRC84085
URI: https://esarda.jrc.ec.europa.eu/index.php?option=com_jifile&filename=NWY2MzQzNjMzNjY5NTI1ZDJiN2I0ZWI4ZDM0MjczNWQ=
http://publications.jrc.ec.europa.eu/repository/handle/JRC84085
Type: Articles in periodicals and books
Abstract: Neutron resonance densitometry (NRD) has been proposed to quantify nuclear materials in particle-like debris of melted fuel formed in a severe accident of nuclear reactors such as the Fukushima Daiichi nuclear power plants. NRD is a method that combines NRTA (neutron resonance transmission analysis) and NRCA (neutron resonance capture analysis) using a pulsed neutron generator and the TOF (time of flight) technique. NRTA is used to quantify the amount of Pu and U isotopes. NRCA is used to identify matrix materials, such as B and Fe, which are present in the melted fuel. A special gamma-ray spectrometer has been designed to apply NRCA in the presence of highly radioactive materials. The applicability of the NRD method has been studied using Monte Carlo simulations and neutron TOF experiments at the GELINA facility of the EC-JRC-IRMM. We conclude that NRD has a potential to determine the quantities of Pu and U isotopes in particle-like debris of melted fuel with counting statistics uncertainties less than 1%, even in the presence of 2.5 w% natB and 9 w% 56Fe.
JRC Directorate:Health, Consumers and Reference Materials

Files in This Item:
There are no files associated with this item.


Items in repository are protected by copyright, with all rights reserved, unless otherwise indicated.