FAST NEUTRON MODERATOR FOR ACCELERATOR IN THERMAL NEUTRON RADIOGRAPHY SYSTEM

摘要

an apparatus for producing a thermal neutron radiography includes an inspection head (20, 20 ') with a neutron generator to accu00e9lerateur (100, 100') with a target (110, 110 ') generator is placed in the head of inspection (20, 20'). the inspection head (20, 20 ') is filled with a liquid fuel.a lookout for him (40, 40 ') is placed, its input window (48, 48') disposed in the fluid moderator inside the head of inspection (20, 20 '). the neutron generator (100, 100 ') includes a vacuum tube (106, 106'), a target (10, 110) positioned on an extension (111, 111 ').the tube (106, 106 ') is supported in a housing are essentially coaxial elongate (102, 102') so as to leave a space between them.a system (162, 164) is provided for circulating a liquid moderator and electrically isolating the hydrogenic in the space between the vacuum tube and the housing to reduce radiation leakage, increase the number of thermal neutrons available for radiographi and to provide electrical insulation for the high potential across the tube.