Delayed gamma-ray spectroscopy combined with active neutron interrogation for nuclear security and safeguards
1 Integrated Support Center for Nuclear Security and Nuclear Nonproliferation, Japan Atomic Energy Agency, Shirakata Shirane 2-4, Tokai, Naka, Ibaraki, Japan
2 Nuclear Safety and Security, Joint Research Centre in, via Enrico Fermi 2749, 21027 Ispra (VA), Italy
3 Nuclear Science and Engineering Center, Japan Atomic Energy Agency, Shirakata Shirane 2-4, Tokai, Naka, Ibaraki, Japan
4 Nuclear Safety and Security, Joint Research Centre, Retieseweg 111, 2440 Geel, Belgium
a e-mail: email@example.com
Published online: 13 September 2017
For the purpose of nuclear security and safeguards, an active neutron interrogation non-destructive assay technique, Delayed Gamma-ray Spectroscopy (DGS), is under development. The technique of DGS uses the detection of decay γ rays from fission products to determine ratios of fissile nuclides in a sample. A proper evaluation of such γ-ray spectra requires integration of nuclear data such as fission cross-sections, fission yields, half-lives, decay-chain patterns, and decay γ-ray yields. Preliminary DGS experiments with the Pulsed Neutron Interrogation Test Assembly, named PUNITA, of the European Commissions’ Joint Research Center have been performed. Signals of delayed γ ray from nuclear materials were successfully observed.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.