Apparatus and instruments for scientific, photographic, optical, optronic, neutron-based, geodetic, measuring, signaling, inspection, simulation, and calibration purposes; apparatus and instruments for use in the space, defense, and aeronautical industries, namely, apparatus for analyzing matter by neutron radiography; subsurface analysis probes; neutron probes for the mining industry; neutron tubes; neutron generators; apparatus and instruments for observing the earth and space; optoelectron...