MONTE CARLO SIMULATION OF THE EXPLOSIVE DETECTION SYSTEM USING THERMAL NEUTRON ACTIVATION TECHNIQUE
Keywords:
Monte Carlo simulation, MCNP program, explosive detection system, thermal neutron activation techniquAbstract
In this research, Monte Carlo simulation of the Explosive Detection System (EDS) using Thermal Neutron Activation (TNA) technique was performed. MCNP-4C Monte Carlo program was used for the simulation and the prototype of the EDS is a luggage inspection system using TNA technique with 252Cf as neutron source. Six vertical arrayed-gamma ray detectors were used to detect gamma ray fluxes resulted from thermal neutron activation of nuclei of the interrogated materials. Gamma ray fluxes of the six arrayed-gamma ray detectors are calculated for comparison. Polyethylene is used as the neutron moderator and shielding. Samples used in the simulation include silk, wool, nylon and explosive(C-4) which were put in the luggage both separately and mixed together. The simulation results show that the EDS using TNA technique is able to indicate the existence and positions of explosive.
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