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Смирнов, Андрей Юрьевич

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Институт нанотехнологий в электронике, спинтронике и фотонике

Институт ИНТЭЛ занимается научной деятельностью и подготовкой специалистов в области исследования физических принципов, проектирования и разработки технологий создания компонентной базы электроники гражданского и специального назначения, а также построения современных приборов на её основе. Наша основная цель – это создание и развитие научно-образовательного центра мирового уровня в области наноструктурных материалов и устройств электроники, спинтроники, фотоники, а также создание эффективной инновационной среды в области СВЧ-электронной и радиационно-стойкой компонентной базы, источников ТГц излучения, ионно-кластерных технологий материалов.

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Андрей Юрьевич

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Только метаданные
Security of Export Deliveries of Regenerated-Uranium Light-Water Reactor Fuel from the Standpoint of IAEA Safeguards
(2020) Blandinskii, V. Y.; Nevinitsa, V. A.; Fomichenko, P. A.; Volkov, Y. N.; Gusev, V. E.; Smirnov, A. Y.; Sulaberidze, G. A.; Волков, Юрий Николаевич; Гусев, Владислав Евгеньевич; Смирнов, Андрей Юрьевич; Сулаберидзе, Георгий Анатольевич
© 2021, Springer Science+Business Media, LLC, part of Springer Nature.The nonproliferation of nuclear materials is the key issue in supplying nuclear fuel to foreign countries. This article discusses the use of regenerated uranium to enhance the security of exports of fresh fuel for light-water reactors. It is shown that if the removal of fuel and its replacement with, for example, natural uranium go undetected, the criminals have long periods of time available to obtain a significant amount of highly enriched uranium, having only several tens of separation devices. The nonproliferation regime can be strengthened by using regenerated uranium, which contains in its decay chain 208Tl (2.61 MeV γ-line) and is advantageously distinguished from 235U (186 keV γ-line). It is shown theoretically that by controlling the thallium content the uranium content in the fuel rods can be quickly analyzed before a fuel assembly is loaded into the core.
Только метаданные
Physical and Technical Problems of Reprocessed Uranium Enrichment with Repeated Recycling in Light-Water Reactors and Ways to Solve Them
(2020) Nevinitsa, V. A.; Bobrov, E. A.; Belov, I. A.; Rodionova, E. V.; Smirnov, A. Y.; Gusev, V. E.; Sulaberidze, G. A.; Смирнов, Андрей Юрьевич; Гусев, Владислав Евгеньевич; Сулаберидзе, Георгий Анатольевич
© 2020, Springer Science+Business Media, LLC, part of Springer Nature.Issues concerning fuel cycle closure are discussed. It is shown that from the standpoint of full utilization of reprocessed nuclear materials the main problems are associated with repeated recycling of uranium, the reason being that limitations are imposed on the content of the isotope 232U in fresh fuel produced from reprocessed materials. The losses of the isotope 235U on repeated recycling of reprocessed uranium in the form of fuel from uranium regenerate and mixtures of processed uranium and plutonium oxides are evaluated. For a light-water reactor, a method of fuel cycle closure making it possible to reduce the 235U losses almost to zero on purification of reprocessed uranium from 232U is shown.
Только метаданные
Optimization of a Square Cascade of Centrifuges for Separation of Multicomponent Mixtures of Stable Isotopes
(2020) Azizov, T. E.; Smirnov, A. Y.; Sulaberidze, G. A.; Смирнов, Андрей Юрьевич; Сулаберидзе, Георгий Анатольевич
© 2020, Springer Science+Business Media, LLC, part of Springer Nature.A method of optimizing the parameters of a three-stream square cascade for separation of multicomponent mixtures of stable isotopes under specified external conditions is proposed. It is based on a combination of a check calculation of the parameters of the cascade based on the separation factor approximation and a numerical search for the values of the external flows which are required to secure a specified external concentration. It is shown that this method can be used to calculate the optimal parameters of a square cascade for separating mixtures with a different number of components.
Только метаданные
Fuel consumption cycle of of light recycled water reactor uranium with full Brennstoffkreislauf eines Leichtwasserreaktors mit vollem Verbrauch von wiederaufbereitetem Uran.
(2020) Rodionova, E. V.; Nevinitsa, V. A.; Smirnov, A. Y.; Смирнов, Андрей Юрьевич
© Carl Hanser Verlag, MünchenThe paper describes an approach to solve the problem of closing fuel cycle of light water reactors (LWR) trough the multiple uranium recycling. Since the second uranium recycle there is a problem of full return of the recycled uranium to LWR fuel cycle due to significant increasing of 232U concentration and strong regulatory restrictions on its content. The paper shows that the use of a double cascade is able to provide almost complete return of recycled uranium to the fuel cycle with minor losses. The reason for the losses is the necessity to clean the recycled uranium from the 232U isotope. We developed a multi-criteria approach to choosing the optimal cascade scheme parameters. The efficiency of the algorithm is demonstrated by the example of enrichment of the recycled uranium of the second recycle. It is shown that not correctly selected optimization criteria of the double cascade enrichment scheme can lead to the fact that the loss of the 235U isotope, provided with waste treatment from 232U, will exceed its savings.
Только метаданные
Universal Separation Potential for Multicomponent Mixtures: Reasons for Its Absence
(2019) Smirnov, A. Yu.; Sulaberidze, G. A.; Смирнов, Андрей Юрьевич; Сулаберидзе, Георгий Анатольевич
The topic of this study is discussion aimed at developing a unified viewpoint on the problem of separation potential and separating power in the theory of separation of multicomponent molecular and isotopic mixtures. The object of study was the generalized separation potential for multicomponent mixtures. A critical assessment of its validity from thermodynamic viewpoint was given. The assumptions made during its derivation were analyzed.
Только метаданные
Cascades with Flow Expansion for Simultaneous Concentration of Intermediate Components
(2019) Fomin, D. N.; Smirnov, A. Y.; Sulaberidze, G. A.; Mustafin, A. R.; Смирнов, Андрей Юрьевич; Сулаберидзе, Георгий Анатольевич; Мустафин, Андрей Рушанович
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.A cascade scheme allowing two intermediate-mass isotopes to be concentrated in a single cascade above the maximum admissible concentrations at the outputs of ordinary cascades is proposed. A cascade with two flow expansions and two additional product flows is used for this. For the example of a mixture of tungsten isotopes, it is shown that the concentrations of 183W and 184W can be increased simultaneously up to 70 and 80%, respectively. In addition, additional product flows can be equal to 50–70% of the primary (end) product flow of the cascade.
Только метаданные
Radiolysis of 232,234U-Enriched Regenerated-Uranium Hexafluoride at the Temporary Storage Stage in a Separation Plant
(2019) Belov, I. A.; Grol', A. V.; Nevinitsa, V. A.; Poveshchenko, O. Y.; Smirnov, A. Y.; Sulaberidze, G. A.; Смирнов, Андрей Юрьевич; Сулаберидзе, Георгий Анатольевич
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.The results of modeling of the radiolysis of uranium hexafluoride at the stage of its temporary storage in a separation plant are reported. Regenerated uranium, which is enriched with 232,234U, being the strongest α-emitting isotopes, was examined as an example. The radiochemical yield of UF6 decomposition was determined approximately from the experimental data. It is shown that the concentration of uranium pentafluoride formed upon radiolysis of uranium hexafluoride is a factor of 107 lower, which, neglecting impurities, makes it possible to assume that the hexafluoride as a whole retains its properties.
Только метаданные
Classification of model cascades for separation of multicomponent isotope mixtures
(2021) Zeng, S.; Jiang, D.; Sulaberidze, G. A.; Smirnov, A. Y.; Borisevich, V. D.; Сулаберидзе, Георгий Анатольевич; Смирнов, Андрей Юрьевич; Борисевич, Валентин Дмитриевич
© 2020, © 2020 Taylor & Francis.As far as we know, it is the first attempt to build the classification of the currently existing models of molecular-selective mass transfer in cascades for isotope separation in the stationary mode of their operation. In papers devoted to this subject, such cascades are often called as “model” ones. It is shown that for the case of symmetric separation any of such a “model” cascade can be represented as a special case of a cascade with constant separation factors. There are established interrelationships of the “model” cascades, both with each other and with the symmetrical countercurrent cascades feasible in practice.
Только метаданные
Optimization of Two- and Three-Cascade Schemes for Efficient Separation of Stable Isotopes
(2022) Azizov, T. E.; Smirnov, A. Y.; Sulaberidze, G. A.; Смирнов, Андрей Юрьевич; Сулаберидзе, Георгий Анатольевич
© 2022, Springer Science+Business Media, LLC, part of Springer Nature.Squared-off cascade systems constructed from two and three cascades are considered. Such schemes can be used to simultaneously concentrate isotopes with intermediate mass numbers in different outgoing streams of the cascades. A technique is proposed for optimizing the parameters of such systems in terms of the criterion of minimum relative total flow for a specified mole-fraction of the desired components. The developed technique was tested on an example of the separation of mixtures with a different number of components.
Только метаданные
Comparison of Optimal Cascades with Additional Product for Separating Multicomponent Mixtures of Stable Isotopes
(2022) Smirnov, A. Yu.; Chistov, A. V.; Sulaberidze, G. A.; Смирнов, Андрей Юрьевич; Сулаберидзе, Георгий Анатольевич