Title: NRD Demonstration Experiments at GELINA
Authors: PARADELA DOBARRO CARLOSALAERTS GeryBECKER BJÖRNHARADA H.HEYSE JANKITATANI F.KOIZUMI M.KOPECKY StefanMONDELAERS WillyMOENS AndreSCHILLEBEECKX PeterTSUCHIYA H.WYNANTS Ruud
Publisher: Publications Office of the European Union
Publication Year: 2015
JRC N°: JRC97798
ISBN: 978-92-79-52325-0 (print)
978-92-79-52324-3 (pdf)
ISSN: 1018-5593 (print)
1831-9424 (online)
Other Identifiers: EUR 27507
OP LA-NA-27507-EN-C (print)
OP LA-NA-27507-EN-N (online)
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC97798
DOI: 10.2787/364770
10.2787/211881
Type: EUR - Scientific and Technical Research Reports
Abstract: Neutron Resonance Densitometry (NRD), a non-destructive analysis method, was presented. The method has been developed to quantify special nuclear material (SNM) in debris of melted fuel that will be produced during the decommissioning of the Fukushima Daiichi nuclear power plants. The method is based on Neutron Resonance Transmission Analysis (NRTA) and Neutron Resonance Capture Analysis combined with Prompt Gamma–ray analysis (NRCA/PGA). The quantification of SNM relies on the NRTA results. The basic principles of NRD, which are based on well-established methodologies for neutron resonance spectroscopy, have been explained. To develop NRD for the characterization of rock- and particle like heterogeneous samples a JAEA/JRC collaboration has been established. As part of this collaboration a NRD demonstration workshop was organized at the time-of-flight facility GELINA of the JRC-IRMM in Geel (B). The potential of NRD was demonstrated by measurements on a complex mixture of different elements. It was demonstrated that the elemental composition of an unknown sample predicted by NRTA deviated on average by less than 2% from the declared value. In addition the potential to identify the presence of light elements by NRCA/PGA was shown.
JRC Directorate:Health, Consumers and Reference Materials

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