Utilizing multiple measurement methods：an Integrated NDA system

As the spent nuclear fuels are themselves highly radioactive, it is thought that the non-destructive assay of nuclear materials contained therein, such as Uranium and Plutonium, is extremely difficult.

To overcome this difficulty by combining the three advanced NDA methods (Fig. 1), we have designed and constructed an integrated NDA system named "NuS-Active-N" (Figs. 2 and 3), for the first time in the world.  With this system, the amount of nuclear materials as well as their isotopic ratios can be non-destructively deduced even under high radiation dose. 

①Differential Die-away Analysis(DDA)
②Neutron Resonance Transmission Analysis(NRTA)
③Prompt Gamma-ray Analysis(PGA)

With the help of now emerging AI technologies, the breadth as well as depth of the information deduced from the results of measurements is expected to be enlarged.  In this field of research and developments, there still lies many unresolved difficulties: it is your creative thinking and insatiable curiosity to achieve breakthroughs in this field.

Fig. 1: The three non-destructive analysis techniques employed in NuS-Active-N.
Fig. 1: The three non-destructive analysis techniques employed in NuS-Active-N.
Fig. 2: A schematic view of the integrated non-destructive analysis system, NuS-Active-N.
Fig. 2: A schematic view of the integrated non-destructive analysis system, NuS-Active-N.
Fig.3: Photos of NuS Active-N (BECKY laboratory).
Fig.3: Photos of NuS-Active-N (BECKY laboratory).

Consult the following papers for further details.

※This research was implemented under the subsidy for nuclear security promotion from MEXT (Ministry of Education, Culture, Sports, Science and Technology).