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The optimum moderator geometry increases the performance of prompt gamma neutron activation analysis (PGNAA) method considerably.In this work an ~(241)Am-Be source was used in the moderator geometry for detecting buried landmines by PGNAA method.Experiments were done to find the best moderator geometry for the moderated ~(241)Am-Be source,by replacing the mine with a neutron detector and counting the thermal neutron flux.The flux of thermal neutrons at the place of mine was used as a determining factor to introduce the best moderator geometry.
The optimum moderator geometry increases the performance of a prompt gamma neutron activation analysis (PGNAA) method method. In this work an ~ (241) Am-Be source was used in the moderator geometry for detecting buried landmines by PGNAA method. Experiments were done to find the best moderator geometry for the moderated ~ (241) Am-Be source, by replacing the mine with a neutron detector and counting the thermal neutron flux. the flux of thermal neutrons at the place of mine was used as a determining factor to introduce the best moderator geometry.