Neutron Detector REGISTRATION reactor neutron radiation

摘要

Uses: nuclear physics, nuclear energy, particularly in the control and safety systems of nuclear power reactors. Neutron detector includes a housing filled with a luminous gaseous medium and the fissionable material formed as a layer supported on a side surface of the housing. In one of the housing end faces arranged optical fiber coupled to the recording system for measuring the luminescent emission power by a photodetector with a filter. What is new is the fact that prior to the photodetector via fiber optic splitter arranged supplemental channel for registration scintillation counting rate in the gaseous medium formed branched part of the optical fiber connected by an additional photodetector with its own filter with a recording system that provides the possibility scintillation counting gas from the fission fragments, obtained by reaction of neutrons with the individual layer of fissile material. The technical result of the utility model is an extension of reactor neutron radiation detecting range by allowing the registration of the neutron flux density up to 10 ⁶ cm ^-2 · s ^-1, which allows the use of a detector not only in the operating and fault conditions, followed by neutron flux densities in the range of ¹⁰ June -10 ¹⁷ cm ^-2 · s ^-1, but in the starting mode of reactor operation. (1 n.p.f., Figure 1).