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Your search keyword '"P. B. BASKOV"' showing total 5 results
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5 results on '"P. B. BASKOV"'

1. Nuclear-optical converters for detecting intense neutron

Author

Pyotr B. Baskov, Gleb V. Marichev, Vyacheslav V. Sakharov, and Vladimir A. Stepanov

Subjects
Nuclear engineering. Atomic power, TK9001-9401
Abstract

In the design of nuclear-optical converters (NOC) for detecting intense neutron fields (fluxes over 1015 cm–2·s–1), it is proposed to use hybrid gas ionization chambers (IC), in which electrical and optical neutron detecting methods are combined. For hybrid ICs, a technology is proposed for obtaining radiation-resistant and mechanically strong radiator materials capable of operating at temperatures of up to 1000 °C. This technology is based on solid-phase boron diffusion saturation of steel. It is shown that, at thermal neutron fluxes of 1×1010 n/(cm2·s) and higher, the integral intensity of argon luminescence as a result of ionization by α-particles and 7Li ions from layers of boride phases is sufficient for detection. The combination of optical and radiation properties of multicomponent fluoride glasses makes it possible to use them as condensed active substances of NOCs. Choosing the elemental and isotopic composition, it becomes possible to use fluoride glasses for multichannel neutron detection as well as to significantly simplify the procedure for separating gamma and neutron components of radiation under conditions of intense radiation fluxes. It has been experimentally shown that in irradiation with a neutron flux of 1×1017 n/(cm2·s), the intensity of Nd IR luminescence in glasses based on zirconium fluoride (ZBLAN) increases in the presence of Gd, which interacts with neutrons.

Published
2022
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2. Small Thorium Fission Chambers for Recording Fast Neutrons in Reactor Installations

Author

V. V. Sakharov, A. S. Khudin, I. V. Mosyagina, O. V. Ivkina, G. P. Kirichenko, and P. B. Baskov

Subjects
Materials science, Nuclear Energy and Engineering, chemistry, Nuclear reactor core, Fission, Nuclear engineering, Thorium, chemistry.chemical_element, Neutron, Temperature cycling, Uranium, Neutron temperature, Thorium fuel cycle
Abstract

The results of development work on experimental samples of small fission ionization chambers for recording fast neutrons (En ~ 1–20 MeV) in a reactor core are presented. A technological solution for obtaining a radiator based on ThO2 as a result of nonstationary low-temperature consolidation of an oxide coating from a solution of thorium carboxylate was developed and realized. Samples of ThO2-based radiators on the surfaces of multichannel electrodes of diameter 3 and 5 mm and coatings based on the isotope 238U (in the form U3O8 based on uranium with 235U content 0.00002%) were fabricated and small fission chambers based on them were assembled. Sample radiators were bench tested for stability during thermal cycling (15 cycles, heating to 750°C) and under vibration loads (to 200 Hz). Physico-mechanical and reactor tests of the fission chambers were conducted and the discrimination characteristics of samples and their sensitivity to heat and fast-neutron fluxes were determined. A comparative analysis of the conditions of effective application of small 238U- and 232Th-based fission chambers in long-time operation as well as in single neutron measurements is made.

Published
2018

3. Development of a Fiber-Optic Channel System for Measuring Physical Parameters for Nuclear Technologies

Author

N. N. Titarenko, S. B. Chebyshov, D. V. Lapshin, P. B. Baskov, P. A. Dvornikov, V. A. Khryachkov, S. N. Kovtun, and O. A. Plaksin

Subjects
System of measurement, 010401 analytical chemistry, Mechanical engineering, Radiation, 01 natural sciences, 0104 chemical sciences, Power (physics), Metrology, 010309 optics, Vibration, Nuclear technology, Nuclear Energy and Engineering, 0103 physical sciences, Environmental science, A fibers, Communication channel
Abstract

The development of a new class of information and measurement systems with improved technical and metrological characteristics for prolonged operation during external perturbations (high temperature, pressure, radiation, seismic, electromagnetic, vibration, and other loads), which are characteristic for special-purpose power installations and units of NPP is discussed.

Published
2018

4. Investigation of possibility of creation of radiation resistance sensors for physical information based on fiber materials

Author

I. V. Mosyagina, V. V. Kadilin, V V Sakharov, S B Chebyshov, and P B Baskov

Subjects
History, Annihilation, Materials science, business.industry, Nanotechnology, Radiation, Microstructure, Computer Science Applications, Education, Nano, Optoelectronics, Neutron, Fiber, Photonics, business, Radiation resistance
Abstract

The results of physical and material science and technological development of new materials of radiation photonics - nano- and microstructure of radiation-sensitive and radiation- resistant optical glass and fibers based on quartz are presented in the report. The possibility of their application in neutron diagnostics devices of nuclear power objects are considered. Component and construction options for the radiation-sensitive fiber and glass materials (with isotopes 10B, 6Li, Gd, ions of Nd3+, Ce3+ etc.), in which radiation resistance is achieved through the organization of areas of "drain" and annihilation of radiation-induced defects are considered.

Published
2016

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