Персона:
Беграмбеков, Леон Богданович

Организационные подразделения

Организационная единица

Институт лазерных и плазменных технологий

Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.

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Беграмбеков

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Леон Богданович

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Теперь показываю 1 - 10 из 16

Только метаданные
Endoscope Emulator Test Bench for ITER Dust Monitor Diagnostic
(2020) Veshchev, E.; Shigin, P.; Vayakis, G.; Walsh, M.; Sadovskiy, Y.; Begrambekov, L.; Bidlevitch, O.; Gordeev, O.; Садовский, Ярослав Алексеевич; Беграмбеков, Леон Богданович
© 1973-2012 IEEE.A technique based on a flexible endoscope was selected as a tool for the diagnostic of dust in ITER ('The Way' in Latin). The diagnostic will consist of two tools - one for fine viewing of dust with a resolution down to a few tens of microns in a few millimeter spot and another one for dust collection. The endoscope will have to go up to 15-m deep inside the tokamak to the inspection region. Due to the specific design features of ITER, the endoscope will have to go upward on an inclined surface for inspection about 18 m away from the insertion point. In order to ensure that the endoscope gets to the desired region of inspection, it will be pushed through guide tubes having a number of bends along their length. Initial estimations of endoscope jacket materials, endoscope stiffness, and push/pull forces were defined experimentally. This article will give a brief reminder of the overall strategy for dust/erosion/tritium monitoring in ITER that is a Protection Important Activity (PIA) and the role of the dust monitor in this context. It focuses on experimental results of real-size tests inside guide tubes of the behavior of different endoscope emulators under various conditions.
Только метаданные
Irradiation with hydrogen atoms and ions as an accelerated hydrogenation test of zirconium alloys and protective coatings
(2019) Gumarov, A. I.; Kashapov, N. F.; Luchkin, A. G.; Vakhitov, I. R.; Begrambekov, L. B.; Evsin, A. E.; Grunin, A. V.; Kaplevsky, A. S.; Беграмбеков, Леон Богданович; Евсин, Арсений Евгеньевич
© 2019 Hydrogen Energy Publications LLC In this work, the results of the irradiation of untreated, preliminarily Ar + -bombarded and Cr-coated samples of zirconium alloy E110 (Zr-1%Nb) with deuterium atoms and ions of deuterium plasma were compared with the results of their exposure to superheated water steam (673 K, 11 MPa; 673 K, 0.1 MPa; 633 K, 0.1 MPa). It was concluded that, despite of the difference in the rates of the oxide layer formation, the features of hydrogenation are similar under the two kinds of impact. However, the hydrogen uptake under irradiation occurs hundreds of times faster than during the steam test. The most effective hydrogenation was achieved under irradiation of the E110 sample with 300–500 eV/at ions of deuterium plasma without oxygen. These circumstances allow suggesting the irradiation with ions of hydrogen plasma as an accelerated hydrogenation test of zirconium alloys and protective coatings under conditions simulating the environment of light-water reactor's core. The proposed method could be realized using a simple plasma device and it does not require high power consumption or special qualification of staff.
Только метаданные
Simulation of Dust Particle Trajectories in an Electrostatic Probe with the Purpose of Increasing Its Efficiency
(2019) Begrambekov, L. B.; Bidlevich, O. A.; Беграмбеков, Леон Богданович
© 2019, Pleiades Publishing, Ltd.Formation of dust particles and clusters is observed in almost all modern fusion devices. Accumulation of dust in next-generation thermonuclear installations can significantly affect plasma parameters and lead to accumulation of unacceptably large amounts of tritium. The use of a specially developed electrostatic probe is planned in the international thermonuclear experimental reactor ITER to collect dust for further analysis. The article describes a numerical model of movement of dust particles in an electrostatic probe. Dust particle trajectories inside the probe are analyzed. Several electrostatic probe design modifications are proposed on the basis of the analysis in order to increase the efficiency of dust collection.
Только метаданные
Effect of Fe-Cr-Al sublayer on the efficiency of aluminum oxide protective coating in a molten lead flow
(2021) Muromskiy, S. M.; Evsin, A. E.; Kondratiev, I. E.; Ayrapetov, A. A.; Grunin, A. V.; Dovganyuk, S. S.; Begrambekov, L. B.; Евсин, Арсений Евгеньевич; Кондратьев, Илья Евгеньевич; Айрапетов, Алексей Александрович; Довганюк, Сергей Сергеевич; Беграмбеков, Леон Богданович
© 2021 Institute of Physics Publishing. All rights reserved.In this work we investigated the possibility of increasing the efficiency of aluminum oxide protective coating on EP-823 steel by applying a sublayer consisted of aluminum and steel components before the coating deposition. It is shown that Fe-Cr-Al sublayer is able to prevent the steel corrosion in a molten lead flow in the case of damage of the oxide coating. In addition, the sublayer reduces the risk of delamination of aluminum oxide and slows down the transport of iron atoms from the steel towards the surface.
Только метаданные
Oxidation and hydrogenation of zirconium alloy E110 under electron and plasma irradiation in various conditions
(2021) Timkovskiy, G. P.; Evsin, A. E.; Kondratiev, I. E.; Dovganyuk, S. S.; Zhdanov, I. D.; Begrambekov, L. B.; Евсин, Арсений Евгеньевич; Кондратьев, Илья Евгеньевич; Довганюк, Сергей Сергеевич; Беграмбеков, Леон Богданович
© 2021 Institute of Physics Publishing. All rights reserved.The features of oxidation and hydrogenation of zirconium alloy E110 under electron and plasma irradiation in various conditions are studied. It is revealed that irradiation intensifies both the oxide layer growth and the hydrogen absorption by zirconium. Applying the anode potential on the E110 sample in plasma allowed to achieve the maximum rates of these processes and at the same time to reproduce their characteristic features exhibited in traditional steam tests. This circumstance determines the choice of plasma anodizing as a perspective basis for the method of accelerated testing of Zr alloys.
Только метаданные
Multifunctional Probe for Studying Plasma–First Wall Interactions at the TRT Tokamak
(2022) Begrambekov, L. B.; Grunin, A. V.; Беграмбеков, Леон Богданович
Только метаданные
Probe Device for Comprehensive Study of Plasma Interaction with Divertor for TRT Tokamak
(2022) Airapetov, A. A.; Begrambekov, L. B.; Sadovsky, Ya. A.; Айрапетов, Алексей Александрович; Беграмбеков, Леон Богданович; Садовский, Ярослав Алексеевич
Только метаданные
Trapping and Desorption of Hydrogen Isotopes under Irradiation of Zirconium Alloy E110 with Ions of Deuterium Plasma
(2023) Evsin, A. E.; Begrambekov, L. B.; Евсин, Арсений Евгеньевич; Беграмбеков, Леон Богданович
Только метаданные
Study of hydrogen exchange between the Zr–1%Nb alloy and the gaseous ambient through the oxidized surface under ion and atomic irradiation
(2023) Evsin, A. E.; Begrambekov, L. B.; Gumarov, A. I.; Vakhitov, I. R.; Евсин, Арсений Евгеньевич; Беграмбеков, Леон Богданович
Только метаданные
Features of Hydrogen Trapping under Irradiation of Zirconium Alloys with Electrons in Various Gaseous Ambient
(2023) Evsin, A. E.; Zhdanov, I. D.; Kondratiev, I. E.; Savvin, N. O.; Begrambekov, L. B.; Евсин, Арсений Евгеньевич; Кондратьев, Илья Евгеньевич; Саввин, Никита Олегович; Беграмбеков, Леон Богданович