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NRF Based Nondestructive Inspection System for SNM by Using Laser-Compton-Backscattering Gamma-Rays

Research Authors
H Ohgaki, M Omer, H Negm, I Daito, H Zen, T Kii, K Masuda, T Hori, R Hajima, T Hayakawa, T Shizuma, M Kando
Research Abstract

A non-destructive inspection system for special nuclear materials (SNMs) hidden in a sea cargo has been developed. The system consists of a fast screening system using neutron generated by inertial electrostatic confinement (IEC) device and an isotope identification system using nuclear resonance fluorescence (NRF) measurements with laser Compton backscattering (LCS) gamma-rays has been developed. The neutron flux of 108 n/sec has been achieved by the IEC in static mode. We have developed a modified neutron reactor noise analysis method to detect fission neutron in a short time. The LCS gamma-rays has been generated by using a small racetrack microtoron accelerator and an intense sub-nano second laser colliding head-on to the electron beam. The gamma-ray flux has been achieved more than 105 photons/s. The NRF gamma-rays will be measured using LaBr3(Ce) scintillation detector array whose performance has been measured by NRF experiment of U-235 in HIGS facility. The whole inspection system has been designed to satisfy a demand from the sea port.

Research Department
Research Journal
Nuclear Physics and Gamma-Ray Sources for Nuclear Security and Nonproliferation (NPNSNP)
Research Member
Research Publisher
World Scientific
Research Rank
3
Research Website
http://www.worldscientific.com/doi/abs/10.1142/9789814635455_0024
Research Year
2014
Research Pages
pp. 203-208