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Перегляд Problems of Atomic Science and Technology, 2019, № 5 за датою випуску

Перегляд Problems of Atomic Science and Technology, 2019, № 5 за датою випуску

Результати 1-20 з 33

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An external beam technique of PIXE for uranium determination in environmental objects

Kuzmenko, V.V.; Levenets, V.V.; Omelnik, O.P.; Rolik, I.L.; Shchur, A.O. (Вопросы атомной науки и техники, 2019)

The possibilities of the determination of the content of uranium in materials of the nuclear fuel cycle and environmental objects using the nuclear-physical methods of analysis based on registration of characteristic X-rays ...
Application of active thermography for defectoscopy of technological equipment on objects of the nuclear power plants

Bazaleev, N.I.; Lytvynenko, V.V. (Вопросы атомной науки и техники, 2019)

The methodical and physical bases of the use of active thermography as a high-performance non-destructive method of control and defectoscopy of materials during thermovision monitoring of technological equipment at NPP ...
Erosion of Co-Cr-W alloy and coating on its basis under the action of cavitation

Kovalenko, V.I.; Klimenko, A.A.; Martynenko, L.I.; Marinin, V.G. (Вопросы атомной науки и техники, 2019)

The average destruction rates (Vs) were measured under the action of cavitation on a pre-production model from the alloy of Co-Cr-W on chemical composition near to the stellite No.6, its initial components and the coating ...
Leaching of uranium ores in the process of sodium sulphate electrolysis

Nefedov, V.G.; Sknar, Yu.E.; Kharytonova, O.A. (Вопросы атомной науки и техники, 2019)

When uranium is extracted from concentrates with high silicon content, acid leaching is usually used. The disadvantage of this method is the high consumption, high cost and corrosion activity of the reagents. Moreover, for ...
Plasma coating formation by the deposition of cathode material eroded through high-current pulsed discharge

Chabak, Yu.G.; Fedun, V.I.; Efremenko, V.G.; Pastukhova, T.V.; Efremenko, B.V. (Вопросы атомной науки и техники, 2019)

The paper analyzes the conditions for the formation of a coating obtained using an electrothermal axial plasma accelerator due to plasma transfer of cathode erosion products. It is shown that by using a cathode of low-melting ...
Features of formation of crystallographic texture and properties in Ti-3Al-2.5V titanium alloy during tubes manufacture

Vakhrusheva, V.S.; Hruzin, N.V.; Malykhin, D.G. (Вопросы атомной науки и техники, 2019)

Texture formation processes at all technological stages of tube manufacture were considered. It has been established that at the stage of hot deformation and manufacture of TREX tubes, tangential and radial textures are ...
Construction problems of volume protected by airtermination rod for the ukrainian nuclear power plant under standard EN 62305

Istomin, О.Ye.; Koliushko, D.G.; Kiprych, S.V.; Rudenko, S.S. (Вопросы атомной науки и техники, 2019)

Mathematical analysis of the rolling sphere method was performed to develop a model for constructing of volume protected by rod air-termination in accordance with EN 62305:2012 for the protection of nuclear power plants ...
Radiation sensitization of the idle voltage spectrum in the photoactive layers of the C₆₀ molecules and squaraine dyes DBSQ

Gaponov, А.М.; Pavlenko, О.L.; Dmytrenko, O.P.; Pinchuk-Rugal, Т.М.; Busko, Т.О.; Pundyk, I.P.; Onanko, A.P.; Alieksandrov, M.A.; Kulish, M.P. (Вопросы атомной науки и техники, 2019)

Quantum-chemical calculations of geometry, charge transfer, energy states, localization of molecular orbitals, optical transitions for complexes of fullerene C₆₀ molecules and DBSQ squaraine dyes were obtained. Optical ...
Use of the Monte Carlo Serpent code for modeling the second series of experimental data of KUCA subcritical installation

Trofymenko, O.R.; Nosovsky, А.V.; Gulik, V.I. (Вопросы атомной науки и техники, 2019)

Modeling of the neutron-physical characteristics of the Kyoto University KUCA subcritical facility was conducted using the Monte Carlo Serpent code. The effective multiplication factors for the critical experiments of the ...
The transmutation modeling for plutonium and minor actinides in the two-zone subcritical reactor

Gulik, V.I.; Sheliahovskyi, D.O.; Nosovskyi, A.V. (Вопросы атомной науки и техники, 2019)

The investigations directed to plutonium and minor actinides transmutations for two-zone subcritical reactor is considered in present paper. The distributions of thermal and fast neutrons in the subcritical system were ...
Spent nuclear fuel dry storage: status and current issues

Yatsenko, M.V.; Korolyov, A.V. (Вопросы атомной науки и техники, 2019)

Among all the options of spent nuclear storage, dry storage seems to be the most expedient method for the nearest future all over the world. Despite the economic attractiveness and the presence of a positive operating ...
Vacuum CVD coatings Ta on target W plate of neutrons source

Borts, B.V.; Neklyudov, I.M.; Polyakov, Yu.I.; Rudenky, S.G.; Lukirsky, Yu.V.; Vorobyov, I.A.; Lopata, А.А. (Вопросы атомной науки и техники, 2019)

The paper presents data on the creation of a tungsten target, protected from corrosion under irradiation with a power of up to 100 kW. A protective coating of tantalum with a thickness of 250 µm was deposited on the surface ...
Comparative analysis of numerical methods used for thermal modeling of spent nuclear fuel dry storage systems

Alyokhina, S.; Matsevity, Y.; Dudkin, V.; Poskas, R.; Sirvydas, A.; Rackaitis, K.; Zujus, R. (Вопросы атомной науки и техники, 2019)

Management of spent nuclear fuel is a very important part in the whole cycle of nuclear energy generation. Usually “dry” storage technology in casks is selected for the interim storage of spent nuclear fuel for up to 50 ...
Combined calculation of radiation from large-sized ground RW storage facilities on the basis of Monte Carlo method

Rudychev, V.G.; Azarenkov, N.A.; Girka, I.O.; Rudychev, D.V.; Rudychev, Y.V. (Вопросы атомной науки и техники, 2019)

A technique to reduce the dose rates, produced by large-sized ground-based radiation sources with dozens of radiating elements of the same geometry arranged along the perimeter, is developed. The radiating elements represent ...
Choice of basic construction parameters of steam generators for NPP of low power

Kravchenko, V.P.; Sereda, R.M.; Zhou Xiaolong; Visotskii, Yu.I.; Rybakov, А.Н. (Вопросы атомной науки и техники, 2019)

Designs and methods for calculating a steam generator (SG) for low power NPPs are considered. As a prototype adopted SG nuclear power plant type KLT-40C (RF). The general list of work in the design of SG is given. A ...
Deposition of TiN-based coatings using vacuum arc plasma in increased negative substrate bias voltage

Kuprin, A.S.; Leonov, S.A.; Ovcharenko, V.D.; Reshetnyak, E.N.; Belous, V.A.; Vasilenko, R.L.; Tolmachova, G.N.; Kovalenko, V.I.; Klimenko, I.O. (Вопросы атомной науки и техники, 2019)

The paper presents the results of the study on the influence of a high substrate bias voltage from 300 up to 1300 V on the titanium nitride coating deposition under nitrogen pressure of 2 Pa. The deposition rate, phase and ...
The development of a three-dimensional model of WWER-1000 core using the Monte Carlo Serpent code for neutron-physical modeling

Gulik, V.I.; Trofymenko, O.R.; Galchenko, V.V.; Budik, D.V. (Вопросы атомной науки и техники, 2019)

The article presents the use of the new Monte Carlo Serpent code for 3D modeling of the WWER-1000 reactor core. Core models for the first loading of RNPP4 and the 28th loading of SUNPP3, the fuel assemblies’ models of ...
Electrical properties of gamma-modified composites copolymer of polyvinylidene fluoride with tetrafluoroethylene and silicon

Nuruyev, I.M. (Вопросы атомной науки и техники, 2019)

The concentration and temperature dependences of the electrical properties of the composites obtained on the basis of a copolymer of polyvinylidene fluoride with tetrafluoroethylene P(VDF–TFE) with silicon nano- and ...
Recrystallization in the metal of welding joints of steam trucks

Dmytryk, V.V.; Glushko, A.V.; Tsar, A.K. (Вопросы атомной науки и техники, 2019)

The recrystallization process in the structure of welded joints of steam pipelines from heat-resistant pearlitic steels, operated for a long time under creep conditions (Te = 545…585 °С, Рe = 20…25 MPa), reduces their ...
Structural engineering of NbN/Cu multilayer coatings by changing the thickness of the layers and the magnitude of the bias potential during deposition

Sobol’, O.V.; Andreev, A.A.; Stolbovoy, V.A.; Kolesnikov, D.A.; Kovaleva, M.G.; Meylekhov, A.A.; Postelnyk, Н.О.; Dolomanov, А.V.; Sagaidashnikov, Yu.Ye.; Kraievska, Zh.V. (Вопросы атомной науки и техники, 2019)

To determine the patterns of structural engineering of vacuum-arc coatings based on niobium nitride in the NbN/Cu multilayer composition, the effect of layer thickness and bias potential on the structural-phase state and ...

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Перегляд Problems of Atomic Science and Technology, 2019, № 5 за датою випуску

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