DETECTOR SYSTEMS FOR IMAGING NEUTRON-ACTIVATION ANALYSIS

This paper compares the performance of two imaging detector systems fo r the new technique of Imaging Neutron Activation Analysis (Imaging NA A). The first system is based on secondary electron imaging, and the s econd employs a position sensitive charged particle detector for direc t localization of beta particles. The secondary electron imaging syste m has demonstrated a position resolution of 20 mum. The position sensi tive beta detector has the potential for higher efficiencies with reso lution being a trade off. Results presented show the feasibility of th e two imaging methods for different applications of Imaging NAA.