Contraband detection system that uses fast neutrons emitted pulses to form direct images.

摘要

A SYSTEM AND METHOD TO DETECT CONTRABAND GENERATING A BEAM highly collimated (13) DRIVEN fast neutron provided with a pulse width on the order of nanoseconds and energy 5 TO 9 MeV. THIS IS GOING TO BEAM track an object (14) submitted. Neutrons RISE OF LIGHTNING REACTION (N, Y) in the volume of AN OBJECT limited or voxel defined by the intersection collimated BEAM AND OBJECT tracked. Neutrons SPEEDY high penetration PRODUCE NUCLEAR REACTION WITH ATOMIC elements present between the object, emitting gamma rays. GAMMA RAYS ARE DETECTED IN A DETECTOR (20). FLIGHT TIME APPROXIMATE Neutron IMPULSE IS MEASURED, allowing it to make a determination VOXEL SPECIAL FROM WHICH DERIVE gamma rays. THE ENERGY OF GAMMA RAYS IDENTIFIED FROM IDENTIFY THE SPECIAL ITEMS WHICH DERIVE. So for EJ: MAY BE DETERMINED direct and precise carbon content, nitrogen, oxygen and chlorine, the components commonly found in SMUGGLING OF A voxel. CONTENT INFORMATION CAN BE COMBINED voxel SAMPLE FROM A SUBSTANTIAL voxels make the object provides a direct indication of the content ELEMENTAL OBJECT, AND FROM THE SAME TO KNOW IF THE SMUGGLING is present or absent between the object.