Optimization of Gamma Detection Assembly System for Different Radioactive Isotope in Dry and Wet Soil

Abstract

Landmine detection is an important and yet challenging problem that remains to be solved. It is not only a problems for military, but also for humanitarian concern. The goal for this research is to propose and perform the efficiency of gamma detection assembly system consisting about different radioactive sources ((60Co,241Amand137 Cs). Experiment was setup to perform the gamma backscattering detection of the landmine buried in a sample types of soil dry and wet of different densities equal 1.338g/m3, 1.583g/m3 respectively. The optimal configuration was selected to scan the device detection along the box contains the soil. The results in terms of contrast ratios and sample distance position verified the capability of the proposed device to monitor where the target sample localized in different depths. In addition the high contrast ratio was observed in 137Cs source where 60Co identifies the sample before reaches the buried point by approximately 30 cm so, 60Co source provides a good result for detection that is specially in dry soil, but when performing wet soil the high contrast ratio and a high signal was obtain in the case of 137Cs source rather than the other two sources. The detection was done by using NaI detection assembly system consisting of radioactive sources isotope (60Co) which was the optimized scattering source. The results in terms of contrast ratios and sample distance positioning verified the capability of the proposed device to monitor the target where sample in different depths identified a spectrum peaks appear. In addition to emphasis the device system capability and performance of a suitable Shielded of device system will be design and investigated.