PROPORTIONAL COUNTER OF LARGE AREA NEUTRONS AND OUTPUT CONTROLLER DETECTOR

摘要

P A PROPORTIONAL COUNTER OF NEUTRONS OF LARGE SURFACE ARE CONSTRUCTED USING A LARGE SEALED METAL BOX 10. THE INSIDE WALLS OF BOX 10 ARE COATED WITH LI-ENCREATED METAL. A MULTICELLULAR PROPORTIONAL COUNTER STRUCTURE IS MANUFACTURED WITHIN THE INTERNAL SPACE DEFINED BY BOX 10 USING A HYDROGENATED PLASTIC MATERIAL. THE INTERIOR OF BOX 10 IS FILLED WITH A COUNTER GAS. WIRES 26 EXTENDING THROUGH THE BOX 10 AND ISOLATED THEREFROM ARE GIVEN TO A POTENTIAL SUCH AS HIGH AS THE COUNTER GAS WORKS IN THE PROPORTIONAL REGION TO AMPLIFY AND COLLECT THE LOAD FROM IONIZATION EVENTS. GIVING IN THE GAS, THE SONS 26 PLAYING THE ROLE OF ANODES AND THE BOX 10 THE ROLE OF CATHODE. THE DIMENSIONS OF THE CELLS ARE CHOSEN SO THAT LI (N, A) H REACTION PRODUCTS WILL STOP IN THE GAS WITH HIGH PROBABILITY. MOREOVER, COMPTON ELECTRONS WILL BE IN MAJOR PART ARRETES EITHER IN THE WALLS, OR IN THE LIMITS OF HYDROGENATED PLASTIC CELLS. / P P A SET OF SUCH COUNTERS CAN BE USED FOR THE DETECTION OF NEUTRON EMITTING MATERIALS THROUGH THE EXIT OF A NUCLEAR FACILITY. / P