Персона: Лисица, Валерий Степанович
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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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- ПубликацияТолько метаданныеAnalysis of accuracy of measuring the flux density of all hydrogen isotopes from first wall to plasma using the H-alpha diagnostics in ITER АНАЛИЗ ТОЧНОСТИ ИЗМЕРЕНИЯ ПЛОТНОСТИ ПОТОКА ВСЕХ ИЗОТОПОВ ВОДОРОДА С ПЕРВОИ СТЕНКИ В ПЛАЗМУ С ПОМОЩЬЮ Н-АЛЬФА-ДИАГНОСТИКИ В ИТЭР(2019) Neverov, V. S.; Shurygin, V. A.; Alekseev, A. G.; Kukushkin, A. B.; Lisitsa, V. S.; Кукушкин, Александр Борисович; Лисица, Валерий Степанович© 2019 National Research Center Kurchatov Institute. All rights reserved.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 sought-for parameters by solving an inverse problem.
- ПубликацияТолько метаданныеBallistic 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.
- ПубликацияТолько метаданныеAlgorithm of calculating the passive signal of tokamak edge plasma for CXRS diagnostics(2019) Sdvizhenskii, P. A.; Levashova, M. G.; Neverov, V. S.; Serov, S. V.; Kukushkin, A. B.; Lisitsa, V. S.; Кукушкин, Александр Борисович; Лисица, Валерий Степанович
- ПубликацияТолько метаданныеINFLUENCE OF ATOMIC LEVELS GROUPING ON RADIATION LOSSES OF ARGON, NEON AND NITROGEN IONS IN NEAR-WALL PLASMA ВЛИЯНИЕ ГРУППИРОВКИ АТОМНЫХ УРОВНЕИ НА РАДИАЦИОННЫЕ ПОТЕРИ ИОНОВ АРГОНА, НЕОНА И АЗОТА В ПРИСТЕНОЧНОИ ПЛАЗМЕ(2023) Kukushkin, A. B.; Levashova, M. G.; Lisitsa, V. S.; Sdvizhenskii, P.A.; Кукушкин, Александр Борисович; Лисица, Валерий Степанович
- ПубликацияТолько метаданныеRadiative Losses of Deuterons, Tritons, and Alpha Particles on Tungsten Ions in the Plasma of the ITER and EU-DEMO Tokamaks(2023) Mavrin, A. A.; Demura, A. V.; Leont’ev, D. S.; Lisitsa, V. S.; Лисица, Валерий Степанович
- ПубликацияТолько метаданныеOn Considering the Effects of Ion Dynamics In Modeling the Spectra of Multicharged Ions(2023) Letunov, A.; Lisitsa, V. S.; Loboda, P. A.; Novikov, A. A.; Лисица, Валерий Степанович; Лобода, Петр Анатольевич
- ПубликацияТолько метаданныеEffect 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
- ПубликацияТолько метаданныеAnalysis 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 СтепановичThe 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.
- ПубликацияТолько метаданныеAn analytical plasma screening potential based on the self-consistent-field ion-sphere model(2019) Li, X.; Astapenko, V. A.; Rosmej, F. B.; Lisitsa, V. S.; Лисица, Валерий Степанович© 2019 Author(s). The radial dependence of the free electron density within the ion sphere radius in finite temperature dense plasmas shows characteristic scaling laws that permit us to derive analytical plasma screening potentials. A generalized analytical approach is developed which shows good agreement with self-consistent quantum mechanical calculations. It is empirically discovered that anomalous strong scaling in the analytical model provides agreement with data obtained in a regime where the lattice structure still prevails.
- ПубликацияТолько метаданныеInfluence of Bundling of Atomic Levels on the Radiation Losses of Argon, Neon, and Nitrogen Ions in the Near-Wall Plasma(2024) Kukushkin, A. B.; Levashova, M. G.; Lisitsa, V. S.; Sdvizhenskii, P. A.; Кукушкин, Александр Борисович; Лисица, Валерий Степанович
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