排序方式: 共有25条查询结果,搜索用时 15 毫秒
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E. A. Azizov S. S. Ananyev V. A. Belyakov E. N. Bondarchuk A. A. Voronova A. A. Golikov P. R. Goncharov A. Yu. Dnestrovskij E. R. Zapretilina D. P. Ivanov A. A. Kavin I. V. Kedrov A. V. Klischenko B. N. Kolbasov S. V. Krasnov A. I. Krylov V. A. Krylov E. G. Kuzmin B. V. Kuteev A. N. Labusov V. E. Lukash I. I. Maximova S. Yu. Medvedev A. B. Mineev V. P. Muratov V. S. Petrov I. Yu. Rodin V. Yu. Sergeev A. V. Spitsyn V. N. Tanchuk V. A. Trofimov R. R. Khayrutdinov M. V. Khokhlov Yu. S. Shpanskiy 《Physics of Atomic Nuclei》2016,79(7):1125-1136
The level of knowledge accumulated to date in the physics and technologies of controlled thermonuclear fusion (CTF) makes it possible to begin designing fusion—fission hybrid systems that would involve a fusion neutron source (FNS) and which would admit employment for the production of fissile materials and for the transmutation of spent nuclear fuel. Modern Russian strategies for CTF development plan the construction to 2023 of tokamak-based demonstration hybrid FNS for implementing steady-state plasma burning, testing hybrid blankets, and evolving nuclear technologies. Work on designing the DEMO-FNS facility is still in its infancy. The Efremov Institute began designing its magnet system and vacuum chamber, while the Kurchatov Institute developed plasma-physics design aspects and determined basic parameters of the facility. The major radius of the plasma in the DEMO-FNS facility is R = 2.75 m, while its minor radius is a = 1 m; the plasma elongation is k 95 = 2. The fusion power is P FUS = 40 MW. The toroidal magnetic field on the plasma-filament axis is B t0 = 5 T. The plasma current is I p = 5 MA. The application of superconductors in the magnet system permits drastically reducing the power consumed by its magnets but requires arranging a thick radiation shield between the plasma and magnet system. The central solenoid, toroidal-field coils, and poloidal-field coils are manufactured from, respectively, Nb3Sn, NbTi and Nb3Sn, and NbTi. The vacuum chamber is a double-wall vessel. The space between the walls manufactured from 316L austenitic steel is filled with an iron—water radiation shield (70% of stainless steel and 30% of water). 相似文献
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Shmurak S. Z. Kedrov V. V. Kiselev A. P. Fursova T. N. Zver’kova I. I. Khasanov S. S. 《Physics of the Solid State》2019,61(4):632-641
Physics of the Solid State - The structure, the photoluminescence, and IR absorption spectra of solid solutions (Lu1 ‒ xEux)2(MoO4)3 have been studied over a wide range of... 相似文献
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T. N. Fursova V. V. Kedrov O. G. Rybchenko S. Z. Shmurak E. B. Yakimov A. A. Mazilkin 《Physics of the Solid State》2017,59(12):2423-2429
Europium alumoborate EuAl3(BO3)4 microcrystals have been synthesized by the flux method at a temperature of 1050°C. The obtained crystals have different morphologies: both plane-faced and skeletal microcrystals have been observed. Infrared spectroscopy, cathodeluminescence, and transmission electron microscopy investigations of individual microcrystals showed that the spectral and structural characteristics of these morphological forms coincide. The obtained crystals are characterized by the rhombohedral symmetry (sp. gr. R32) with the inclusions of C2/c monoclinic phase domains. 相似文献
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B. S. Fedorov N. I. Golovina M. A. Fadeev A. B. Eremeev V. V. Arakcheeva G. V. Strukov V. V. Kedrov G. V. Shilov R. F. Trofimova L. O. Atovmyan 《Russian Chemical Bulletin》1998,47(3):510-513
The reaction of nicotinoyl chloride with ethylene glycol mononitrate yielded the previously unknown 2-nitroxyethyl nicotinate.
The resulting ester was used as a ligand in the reaction with PdCl2 for preparing a new complex,trans-bis(2-nitroxyethyl nicotinate-N)dichloropalladium(ii). The structures of the ligand and the complex were established by X-ray structural analysis.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 527–530, March, 1998. 相似文献
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Fedorov B. S. Golovina N. I. Fadeev M. A. Strukov G. V. Kedrov V. V. Shilov G. V. Boiko G. N. Atovmyan L. O. 《Russian Chemical Bulletin》2001,50(3):520-524
Previously unknown N-(2-nitroxyethyl)isonicotinamide was synthesized by the reaction of isonicotinoyl chloride with 2-nitroxyethylamine and was used as a ligand in the reactions with PdCl2 and PtCl2 to prepare new complexes, viz., trans-bis[(2-nitroxyethyl)isonicotinamide-N]dichloropalladium(ii) and cis-bis[(2-nitroxyethyl)isonicotinamide-N]dichloroplatinum(ii), respectively. The structures of the ligand and the resulting complexes were established by X-ray diffraction analysis. 相似文献
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Harald Janovjak Dr. K. Tanuj Sapra Dr. Alexej Kedrov Dr. Daniel J. Müller Prof. Dr. 《Chemphyschem》2008,9(7):954-966
Membrane proteins are involved in essential biological processes such as energy conversion, signal transduction, solute transport and secretion. All biological processes, also those involving membrane proteins, are steered by molecular interactions. Molecular interactions guide the folding and stability of membrane proteins, determine their assembly, switch their functional states or mediate signal transduction. The sequential steps of molecular interactions driving these processes can be described by dynamic energy landscapes. The conceptual energy landscape allows to follow the complex reaction pathways of membrane proteins while its modifications describe why and how pathways are changed. Single‐molecule force spectroscopy (SMFS) detects, quantifies and locates interactions within and between membrane proteins. SMFS helps to determine how these interactions change with temperature, point mutations, oligomerization and the functional states of membrane proteins. Applied in different modes, SMFS explores the co‐existence and population of reaction pathways in the energy landscape of the protein and thus reveals detailed insights into local mechanisms, determining its structural and functional relationships. Here we review how SMFS extracts the defining parameters of an energy landscape such as the barrier position, reaction kinetics and roughness with high precision. 相似文献
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Belyaev V. S. Matafonov A. P. Andreev S. N. Tarakanov V. P. Krainov V. P. Lisitsa V. S. Kedrov A. Yu. Zagreev B. V. Rusetskii A. S. Borisenko N. G. Gromov A. I. Lobanov A. V. 《Physics of Atomic Nuclei》2022,85(1):31-41
Physics of Atomic Nuclei - The results obtained by experimentally and theoretically studying the yield of the promising nuclear-fusion reaction $${}^{11}$$ B( $$p,3\alpha$$ ) initiated by powerful... 相似文献
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Shmurak S. Z. Kedrov V. V. Kiselev A. P. Fursova T. N. Zver’kova I. I. Khasanov S. S. 《Physics of the Solid State》2020,62(11):2122-2131
Physics of the Solid State - Studies of the structure, IR absorption spectra, luminescence spectra, and excitation of luminescence of Ce3+ and Tb3+ ions in crystals of solid solutions of... 相似文献
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S.?Ya.?PetrovEmail author V.?I.?Afanasyev A.?D.?Melnik M.?I.?Mironov A.?S.?Navolotsky V.?G.?Nesenevich M.?P.?Petrov F.?V.?Chernyshev I.?V.?Kedrov E.?G.?Kuzmin B.?V.?Lyublin S.?S.?Kozlovski A.?N.?Mokeev 《Physics of Atomic Nuclei》2017,80(7):1268-1278
The control of the deuterium–tritium (DT) fuel isotopic ratio has to ensure the best performance of the ITER thermonuclear fusion reactor. The diagnostic system described in this paper allows the measurement of this ratio analyzing the hydrogen isotope fluxes (performing neutral particle analysis (NPA)). The development and supply of the NPA diagnostics for ITER was delegated to the Russian Federation. The diagnostics is being developed at the Ioffe Institute. The system consists of two analyzers, viz., LENPA (Low Energy Neutral Particle Analyzer) with 10–200 keV energy range and HENPA (High Energy Neutral Particle Analyzer) with 0.1–4.0MeV energy range. Simultaneous operation of both analyzers in different energy ranges enables researchers to measure the DT fuel ratio both in the central burning plasma (thermonuclear burn zone) and at the edge as well. When developing the diagnostic complex, it was necessary to account for the impact of several factors: high levels of neutron and gamma radiation, the direct vacuum connection to the ITER vessel, implying high tritium containment, strict requirements on reliability of all units and mechanisms, and the limited space available for accommodation of the diagnostic hardware at the ITER tokamak. The paper describes the design of the diagnostic complex and the engineering solutions that make it possible to conduct measurements under tokamak reactor conditions. The proposed engineering solutions provide a safe—with respect to thermal and mechanical loads—common vacuum channel for hydrogen isotope atoms to pass to the analyzers; ensure efficient shielding of the analyzers from the ITER stray magnetic field (up to 1 kG); provide the remote control of the NPA diagnostic complex, in particular, connection/disconnection of the NPA vacuum beamline from the ITER vessel; meet the ITER radiation safety requirements; and ensure measurements of the fuel isotopic ratio under high levels of neutron and gamma radiation. 相似文献