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Report No.

Active neutron NDA techniques for nuclear non-proliferation applications, 4; Development of delayed gamma-ray spectroscopy; Experimental research plan

Koizumi, Mitsuo ; Heyse, J.*; Mondelaers, W.*; Paradela, C.*; Pedersen, B.*; Schillebeeckx, P.*; Seya, Michio; Rodriguez, D. ; Takamine, Jun 

The fission-product yield distributions are unique for each fissionable nuclide and interrogating neutron energy. Ratios of fissile materials (e.g. $$^{235}$$U, $$^{239}$$Pu, and $$^{241}$$Pu), therefore, could be deduced from differences in the observed neutron-induced Delayed Gamma-ray (DG) spectra characterized by the difference of these yields. This DG Spectroscopy (DGS) project includes research and development of a measurement system along with confirming and improving nuclear data. Experiments will be held at multiple facilities, including ITU/Ispra (Italy), IRMM/Geel (Belgium), and KURRI/Kumatori (Japan), using a wide range of neutron sources and nuclear material sample targets. The experimental efforts of this DGS project are described in this presentation.



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