Proportional counter of neutrons of large surface area and sensor output controller

摘要

Is constructed, a proportional counter of neutrons of large area, by using a large metallic box body 10. The walls inland of the box 10 are coated of metal, enriched in the li. It makes a multi-cell structure of a proportional counter to the inside of the internal space defined by the box 10 by using a plastic material hydrogenated. The inside of the box 10 is filled with a gas meter. The wires 26 extending through the box 10 and insulated with respect to that - latter, are set to a potential which is suitably of such a manner that the gas meter operates in the region which is proportional to amplify and collect the load from ionization reactions occurring in the gas, the wires 26, which plays the role of the anodes and the box 10, the role of the cathode. The dimensions of the cells are chosen in such a manner that the products of the reaction of li (n, a) h stop in the gas with a high probability. Moreover, the electrons compton will be in the most part arrested either in the walls, or within the limits of the cells plastic material hydrogenated. / p & & p & it is possible to use an assembly of such counters for the detection of raw issuing of neutrons passing through the output of an installation resonance.