Matrix Characterization of the Sea Floor in the Threat Material Detection Processes

Results obtained by using the fast neutron activation analysis (FNAA) with the associated alpha particle for underwater analysis (salinity of 38 g/L) of Ca, Mg-rocks, and Si-rocks, which are the main types of rocks found in the Adriatic Sea, have been presented. Geochemical data of coastal sea sediments in the Adriatic Sea acquired by the energy dispersive X-ray fluorescence (EDXRF) analysis are also presented. The data obtained can be used to evaluate the background for neutron sensor underwater applications used in threat material analysis.