Radiochemical detector of spatial distribution of neutron flux density in nuclear reactor
| Autor: | V. E. Yants, S.G. Lebedev |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Nuclear reaction
Physics Nuclear and High Energy Physics Astrophysics::High Energy Astrophysical Phenomena 020209 energy Nuclear Theory Detector Proportional counter 02 engineering and technology Nuclear reactor 030218 nuclear medicine & medical imaging law.invention Core (optical fiber) 03 medical and health sciences 0302 clinical medicine Nuclear reactor core Neutron flux law 0202 electrical engineering electronic engineering information engineering Neutron Atomic physics Nuclear Experiment Instrumentation |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 916:83-86 |
| ISSN: | 0168-9002 |
| Popis: | The paper describes a device for measuring the spatial distribution of the fast neutron flux density in a nuclear reactor based on the experience in a flowing gaseous monitoring of a neutron flux. The device is a cylindrical tube divided into domains with a powdered active substance — calcium oxalate, in which nuclear reactions take place to form a noble radioactive gas 37 Ar, which is transported by a carrier gas to a proportional counter , where the 37 Ar decay rate is measured. This decay rate is uniquely related to the neutron flux in the core. The device allows real-time monitoring of the distribution of neutron fluxes along the height of the core. Advantages of the device are the absence of mechanical elements, radiation resistance and a wide temperature range. Proposal described allow using the procedure of “barcode” for the neutron flux density distribution over the height of the nuclear reactor core. |
| Databáze: | OpenAIRE |
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