Landmine detection with the neutron backscattering method

Neutron backscattering was selected as a promising new method for the detection of landmines. The technique is based on the use of a ²⁵²Cf source and a thermal neutron detector. The fast neutrons from the californium source are moderated more rapidly in the landmine, especially plastic mines, than in the surrounding soil. This leads to an increase in the number of reflected thermal neutrons above the place where the mine is buried. Results from experimental trials with the Delft University Neutron Backscattering LAndmine Detector (DUNBLAD) are presented and will be compared with results of Monte Carlo simulations. Also aspects concerning the limitations of this method and the radiation dose for the user are examined. Based on these results, a new portable prototype detector is presented. This device will be combined with a metal detector as these two techniques are complementary and therefore will increase the reliability of the system