Персона:
Кукушкин, Александр Борисович

Организационные подразделения

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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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Кукушкин

Имя

Александр Борисович

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Теперь показываю 1 - 10 из 45

Только метаданные
Effect of Thermodynamic Nonequilibrium of Hydrogen Recycling on the Charge-Exchange Spectroscopy of Tokamak Edge Plasma
(2023) Kukushkin, A. B.; Kukushkin, A. S.; Levashova, M. G.; Lisitsa, V. S.; Khusnutdinov, R. I.; Кукушкин, Александр Борисович; Лисица, Валерий Степанович; Хуснутдинов, Радмир Ильдарович
Только метаданные
Development of a Software Module for Synthetic Optical Diagnostics of Plasmas in the T-15MD Tokamak and Calculation of Passive Spectroscopy Signals
(2023) Neverov, V. S.; Andreenko, E. N.; Akhtyrskiy, S. V.; Zemtsov, I. A.; Kukushkin, A. B.; Кукушкин, Александр Борисович
Открытый доступ
Assessment of Multiplet Splitting and Line Radiation Imprisonment Effects during Discharge Quenching by Intense Argon Injection in ITER
(2024) Sdvizhenskii, P. A.; Kukushkin, A. B.; Levashova, M. G.; Lisitsa,V.S.; Кукушкин, Александр Борисович; Лисица, Валерий Степанович
Только метаданные
MODELLING OF SPUTTERING RATE OF THE TOKAMAK FIRST WALL BY HYDROGEN ISOTOPES ATOMS IN THE NEAR-WALL PLASMA МОДЕЛИРОВАНИЕ СКОРОСТИ РАСПЫЛЕНИЯ ПЕРВОИ СТЕНКИ ТОКАМАКА АТОМАМИ ИЗОТОПОВ ВОДОРОДА В ПРИСТЕНОЧНОИ ПЛАЗМЕ
(2024) Khusnutdinov, R. I.; Efimov, N. E.; Nikitin, I. A.; Gasparyan, Yu. M.; Kukushkin, A. B.; Хуснутдинов, Радмир Ильдарович; Ефимов, Никита Евгеньевич; Никитин, Иван Андреевич; Гаспарян, Юрий Микаэлович; Кукушкин, Александр Борисович
Открытый доступ
ТЕРМОДИНАМИЧЕСКАЯ НЕРАВНОВЕСНОСТЬ РЕЦИКЛИНГА ВОДОРОДА В ПРИСТЕНОЧНОЙ ПЛАЗМЕ ТОКАМАКА И ЕЕ ВЛИЯНИЕ НА ПЕРЕЗАРЯДОЧНУЮ СПЕКТРОСКОПИЮ В ИТЭР
(НИЯУ МИФИ, 2023) КУКУШКИН, А. Б.; КУКУШКИН, А. С.; ЛЕВАШОВА, М. Г.; ЛИСИЦА, В. С.; НЕВЕРОВ, В. С.; ПШЕНОВ, А. А.; СДВИЖЕНСКИЙ, П. А.; ТОЛСТИХИНА, И. Ю.; ХУСНУТДИНОВ, Р. И.; СЕРОВ, С. В.; ТУГАРИНОВ, С. Н.; Хуснутдинов, Радмир Ильдарович; Кукушкин, Александр Борисович; Лисица, Валерий Степанович
Термодинамическая неравновесность рециклинга изотопов водорода в пристеночной плазме токамака состоит в существенном отклонении функции распределения по скоростям (ФРС) нейтральных атомов изотопов водорода от однотемпературной максвелловской ФРС. Такое отклонение впервые обнаружено в спектроскопических измерениях излучения плазмы в линиях бальмеровской серии водорода и дейтерия в токамаке Т-3 [1]. В настоящей работе проанализировано влияние указанной термодинамическая неравновесности на пассивный сигнал перезарядочной спектроскопии (CXRS-диагностики) периферийной плазмы в токамаках на примере ожидаемых условий в токамаке ИТЭР.
Только метаданные
Analysis of the Accuracy of Measuring the Flux Density of All Hydrogen Isotopes from First Wall to Plasma Using the H-Alpha Diagnostics in ITER
(2020) Kukushkin, A. B.; Neverov, V. S.; Lisitsa, V. S.; Shurygin, V. A.; Кукушкин, Александр Борисович; Лисица, Валерий Степанович
The results of the analysis of the accuracy of measuring the flux density of all hydrogen isotopes from the first wall of the main vacuum chamber to the ITER tokamak plasma using the high-resolution spectroscopy of Balmer alpha lines of hydrogen isotopes (H-alpha diagnostics) are presented. Under the conditions of the expected high background radiation generated by the divertor stray light and the absence of the possibility of using the optical dumps in ITER, a differential measurement scheme is necessary, which uses the spatial variation of the coefficient of the light reflection from the natural landscape of the first wall. The measurement accuracy analysis is carried out with the help of the method of synthetic diagnostics, which uses the results of the predictive numerical modeling of different modes of hydrogen recycling for simulation of the expected diagnostic signals and determination of the desired parameters by solving an inverse problem.
Только метаданные
Spectral intensity of electron cyclotron radiation coming out of plasma in various regimes of ITER operation
(2019) Minashin, P. V.; Kukushkin, A. B.; Кукушкин, Александр Борисович
Только метаданные
Ballistic model of recycling of atomic and molecular hydrogen and its application to the ITER main chamber
(2021) Neverov, V. S.; Shurygin, V. A.; Kukushkin, A. B.; Kukushkin, A. S.; Lisitsa, V. S.; Pshenov, A. A.; Кукушкин, Александр Борисович; Лисица, Валерий Степанович
© 2021 IOP Publishing LtdA simple, computationally efficient 1D model is suggested for the recycling of atomic and molecular hydrogen between the main chamber first wall (FW) of a tokamak and the peripheral plasma. The model is based on iteratively solving the kinetic equation for the 1D velocity distribution function (VDF) of hydrogen neutral atoms in the projection of velocity on the direction normal to the FW. The model results in a fast-converging routine due to the domination of the contribution to the VDF from long-distance, ballistic flights of the neutral atoms produced by the charge exchange of colder atoms with hotter plasma ions. The proposed modification of the ballistic model (BM) enhances its original version along the following lines: the account of the inelastic reflections of the neutral atoms from the wall; parameterisation of the boundary condition for the VDF of the atoms produced by the reflection of ions from the wall with immediate recombination, without capture in the wall and thermalisation there; extension to a mixture of hydrogen isotopes; elaboration of algorithms for speeding up computation on graphical processing units. The complete set of equations of the BM is published for the first time. The model is verified by comparison with the EIRENE code simulations of the VDF of neutral atoms and molecules in the scrape-off-layer around mid-plane for typical conditions of ITER operation. The applicability of the BM to the synthetic diagnostics developed for the H-alpha high-resolution spectroscopy is demonstrated. That is, the simple 1D model reproduces reasonably well the 1D projection of the data computed with the 3D Monte-Carlo code on a 2D plasma background.
Открытый доступ
Spectral Intensity of Electron Cyclotron Radiation Emerging from the Plasma to the First Wall in ITER
(2023) Minashin, P. V.; Kukushkin, A. B.; Кукушкин, Александр Борисович
Открытый доступ
Self-Similarity of Continuous-Spectrum Radiative Transfer in Plasmas with Highly Reflecting Walls
(2021) Kukushkin, A. B.; Minashin, P. V.; Кукушкин, Александр Борисович
Radiative Transfer (RT) in a continuous spectrum in plasmas is caused by the emission and absorption of electromagnetic waves (EM) by free electrons. For a wide class of problems, the deviation of the velocity distribution function (VDF) of free electrons from the thermodynamic equilibrium, the Maxwellian VDF, can be neglected. In this case, RT in the geometric optics approximation is reduced to a single transport equation for the intensity of EM waves with source and sink functions dependent on the macroscopic parameters of the plasma (temperature and density of electrons). Integration of this equation for RT of radio-frequency EM waves in laboratory plasmas with highly reflecting metallic walls is substantially complicated by the multiple reflections which make the waves with the long free path the dominant contributors to the power balance profile. This in turn makes the RT substantially nonlocal with the spatial-spectral profile of the power balance determined by the spatial integrals of the plasma parameters. The geometric symmetry of the bounding walls, especially when enhanced by the diffuse reflectivity, provides a semi-analytic description of the RT problem. Analysis of the accuracy of such an approach reveals an approximate self-similarity of the power balance profile and the radiation intensity spectrum in both approximate and ab initio modeling. This phenomenon is shown here for a wide range of plasma parameters and wall reflectivity, including data from various numeric codes. The relationship between the revealed self-similarity and the accuracy of numeric codes is discussed.