Doping explosive materials for neutron radiography enhancement

Most ordnance materials that are inorganic mixtures neutron radiograph pooly, or not at all, particularly if contained within a thick metallic structure. Investigations were made relative to selecting a material(s) with high neutron absorbing property that when added to the explosive mixture enhanced the imaging of the material, and the quantity of the additive would not interfere with the proper reaction of the chemical mixture. (Auth.)