Introduction to Development of Advanced Safeguards and Security NDA Technologies by JAEA-ISCN

JAEA has been implementing development programs of basic technologies of the following advanced NDA (non-destructive assay) of nuclear material (NM) for nuclear safeguards and security. (1) Alternative to 3He neutron detection using ZnS/B2O3 ceramic scintillator (2) NRD (neutron resonance densitometry) using NRTA (neutron resonance transmission analysis) and NRCA (neutron resonance capture analysis) (3) NRF (nuclear resonance fluorescence)-NDA using laser Compton scattered (LCS) gamma-rays (intense mono-energetic gamma-rays). The development program (1) is for NDA systems that use ZnS/B2O3 ceramic scintillator as alternative neutron detector to 3He for coming shortage of its supply. The program (2) is for a NDA system of isotopic composition measurement (non-destructive mass spectroscopy) in targets such as particle-like melted fuel debris using NRTA and NRCA. The program (3) is for NDA systems using a specific NRF reaction of certain Pu/U isotope caused by mono-energetic LCS gamma-ray with energy tuned to the specific excited state of the isotope. This paper introduces above three programs.