Detailed property checking of suspicious objects with active neutron non-destructive methods using a D-T pulsed neutron source

Kureta, Masatoshi   ; Seya, Michio

The special nuclear materials (SNMs) and radioactive materials in a suspicious object could be detected by the passive and/or active neutron and -ray detection systems. It would be necessary for safe dismantling, transportation and nuclear forensics that the detailed inner structure checking system of detected suspicious objects should be operated after the detection. The detection system of the SNMs for a baggage inspection had already been developed at the JAEA, and it was confirmed that the concealed SNMs in a baggage could be detected with very high sensitivity by the prototype system. The detection time of SNMs was less than five seconds in many cases. And the JAEA has developing the SNM measurement and an explosive detection systems using the JAEA-Type deferential die-away analysis and prompt -ray analysis techniques at present under the project "Development of active neutron non-destructive assay technique".