Landmine detection with the neutron backscattering method

Neutron backscattering was selected as a promising new method for the detec tion of landmines. With this technique, a Cf-252 source and a thermal neutr on detector are used. Fast neutrons from the Californium source are better moderated by the landmine, especially plastic mines, than in the surroundin g soil. This leads to an increase in the number of reflected thermal neutro ns above the mine. Results from experimental trials with the Delft Universi ty Neutron Backscattering Landmine Detector (DUNBLAD) are presented and com pared with results from Monte Carlo simulations. The limitations of this me thod and the radiation dose for the user are investigated. Based on these r esults, a new portable prototype detector is presented.