Перегляд за автором "Shapoval, A.N."

Сортувати за: Порядок: Результатів:

  • On the issue of shielding properties of plasma in the outside separatrix region of U-3M 
    Konovalov, V.G.; Chechkin, V.V.; Ggrigor’eva, L.I.; Shapoval, A.N. (Вопросы атомной науки и техники, 2014)
    When providing experiments on RF plasma production and heating in U-3M torsatron there was observed sudden decrease (up to two times) of mean confined plasma density during step-rise of an RF antenna voltage. Trying to ...
  • Peculiarities of plasma fluctuations during RF heating in Uragan-3M torsatron by means of two alfven waves 
    Pavlichenko, O.S.; Skibenko, A.I.; Volkov, E.D.; Berezhniy, V.L.; Ocheretenko, V.L.; Konovalov, V.G.; Kulaga, A.Ye.; Litvinov, A.P.; Pinos, I.B.; Prokopenko, A.V.; Shapoval, A.N.; Shvets, O.M.; Tsybenko, S.A. (Вопросы атомной науки и техники, 2005)
    Three wave interaction has been observed in experiments on Uragan-3M torsatron. Two RF antennas with frequencies Ω1 and Ω2 were used simultaneously for plasma production and heating. Plasma was probed by microwaves, these ...
  • Plasma parameters evolution during conditioning RF discharges in Uragan-2M torsatron 
    Skibenko, A.I.; Prokopenko, A.V.; Berezhnyj, V.L.; Burchenko, P.Ya.; Krasnyj, V.V.; Kulaga, A.E.; Lesnyakov, G.G.; Lozin, A.V.; Moiseenko, V.E.; Ocheretenko, V.L.; Pavlichenko, O.S.; Pinos, I.B.; Shapoval, A.N.; Shvets, O.M.; Tarasov, M.I.; Tereshin, V.I.; Tsybenko, S.A.; Zamanov, N.V. (Вопросы атомной науки и техники, 2009)
    The results of the plasma parameters optimization measured via two-chord interferometry, radiometry, and the registering of the Нα, CIII, OII lines intensity are discussed. The optimization was realized by variation of ...
  • Radiation of multicomponent gas-metal plasma of a pulsed reflex discharge 
    Kovtun, Yu.V.; Skibenko, A.I.; Skibenko, E.I.; Larin, Yu.V.; Shapoval, A.N.; Yuferov, V.B. (2010)
    Measurements on the radiation flux of gas-metal plasma formed in the medium of igniting gas (gas mixture) and sputtered cathode material in the pulsed reflex discharge were carried out. A spectrometric method was applied ...
  • Radio-frequency plasma start-up at Uragan-3M stellarator 
    Moiseenko, V.E.; Lyssoivan, A.; Wauters, T.; Tripský, M.; Lozin, A.V.; Pavlichenko, R.O.; Kozulya, M.M.; Dreval, M.B.; Mironov, Yu.K.; Romanov, V.S.; Kulaga, A.Ye.; Zamanov, N.V.; Shapoval, A.N.; Konovalov, V.G.; Chechkin, V.V.; Grigor’eva, L.I.; Beletskii, A.A.; Kasilov, A.A.; Garkusha, I.E. (Вопросы атомной науки и техники, 2017)
    A double frame antenna with a broad spectrum of parallel wavenumbers (with respect to the magnetic field) is used for radio-frequency (RF) plasma production in Uragan-3M stellarator type device. The delay between the start ...
  • RF heating below ion-cyclotron frequencies in Uragan torsatrons 
    Moiseenko, V.E.; Dreval, M.B.; Burchenko, P.Ya.; Losin, A.V.; Berezhnyj, V.L.; Bondarenko, V.N.; Chechkin, V.V.; Grigor’eva, L.I.; Hartmann, D.; Koch, R.; Konovalov, V.G.; Kotsubanov, V.D.; Kramskoi, Ye.D.; Kulaga, A.E.; Lyssoivan, A.I.; Mironov, V.K.; Pavlichenko, R.O.; Romanov, V.S.; Shapoval, A.N.; Skibenko, A.I.; Slavnyi, A.S.; Tereshin, V.I.; Voitsenya, V.S. (2010)
    The experiments on Uragan-3M torsatron (stellarator) on Alfvén resonance heating are presented. Usage of the three-halfturn antenna provides plasma density increase and heating of the electron plasma component.
  • Simulating study of plasmachemical erosion of a-C:H films in a ECR discharge plasma 
    Konovalov, V.G.; Makhov, M.N.; Ryzhkov, I.V.; Shapoval, A.N.; Shtan’, A.F.; Skorik, O.A.; Solodovchenko, S.I.; Timoshenko, A.I.; Voitsenya, V.S. (Вопросы атомной науки и техники, 2011)
    The dynamics of interference figure of the reflection spectrum for stainless steel and copper mirrors with specially deposited carbon-containing film (ɚ-C:H) were studied when the film was gradually eroded under impact ...
  • Specular and diffusive reflectance of stainless steel mirrors sputtered with Ar⁺ ions 
    Konovalov, V.G.; Bondarenko, V.N.; Ryzhkov, I.V.; Shapoval, A.N.; Shtan’, A.F.; Skoryk, O.O.; Solodovchenko, S.I.; Voitsenya, V.S. (Вопросы атомной науки и техники, 2012)
    It was shown that a light source with edge sharpness can be used for very sensitive measurements of the ratio of specular and diffusive components of reflectance of the mirror subjected to sputtering.
  • Stellarator research at IPP KIPT: status and prospects 
    Moiseenko, V.E.; Glazunov, G.P.; Lozin, A.V.; Konotopskiy, A.L.; Baron, D.I.; Beletskii, A.A.; Bondarenko, M.N.; Chechkin, V.V.; Dreval, M.B.; Grigor’eva, L.I.; Kozulya, M.M.; Maznichenko, S.M.; Mironov, Yu.K.; Pavlichenko, R.O.; Romanov, V.S.; Shapoval, A.N.; Korovin, V.B.; Konovalov, V.G.; Zamanov, N.V.; E.V., Turianska; Kulyk, Yu.S.; Wauters, T.; Lyssoivan, A.I.; Ågren, O.; Garkusha, I.E.; Uragan-2M Team (Вопросы атомной науки и техники, 2019)
    Features of the recent Uragan-2M campaign are reviewed together with some theoretical advances. They include experiments with B4C limiter, studies of various 1…20 kHz oscillations, development of a new in-situ diagnostics ...
  • Temperature of impurity ions in a RF heated plasma of the U-3M torsatron as measured by means of the Doppler spectrometry 
    Konovalov, V.G.; Bondarenko, V.N.; Shapoval, A.N.; Slavny, A.S.; Voitsenya, V.S.; Volkov, E.D. (Вопросы атомной науки и техники, 2002)
  • The method for in situ monitoring of the quality of in-vessel mirrors in a fusion reactor 
    Konovalov, V.G.; Makhov, M.N.; Shapoval, A.N.; Ryzhkov, I.V.; Shtan’, A.F.; Solodovchenko, S.I.; Voitsenya, V.S. (Вопросы атомной науки и техники, 2009)
    In laser and optical methods of plasma diagnostics in ITER the most critical components of the measurement schemes will be the First Mirrors (FM) facing the burning plasma and located rather close to plasma volume. It is ...
  • The problem of plasma density increasing in the U-3M torsatron after RF heating termination 
    Pashnev, V.K.; Tarasov, I.K.; Sitnikov, D.A.; Bondarenko, V.N.; Chechkin, V.V.; Shapoval, A.N.; Pavlichenko, R.O.; Tarasov, M.I.; Sorokovoy, E.L.; Petrushenya, A.A.; Skibenko, A.I.; Karpuhin, L.L.; Lozin, A.V. (Вопросы атомной науки и техники, 2013)
    In the U-3M torsatron a significant chord-averaged plasma density increase is observed after the RF-heating termination. The objective of this work is to find out possible mechanisms resulting in plasma density increasing.
  • Threehalf-turn antennas start-up 
    Moiseenko, V.E.; Lozin, A.V.; Kozulia, M.M.; Korovin, V.B.; Beletskii, A.A.; Baron, D.I.; Grigor’eva, L.I.; Chechkin, V.V.; Mironov, Yu.K.; Romanov, V.S.; Shapoval, A.N.; Makhov, M.M.; Konovalov, V.G.; Pavlichenko, R.O.; Zamanov, N.V.; Dreval, N.B.; Slavnij, A.S.; Turianska, O.V.; Uragan-2M Team (Вопросы атомной науки и техники, 2019)
    The start-up experiments were carried out at Uragan-2M stellarator with the Three-Half-Turn antenna (THT) without any pre-ionization. Conditions for optimal gas breakdown were found out through the variation of the neutral ...
  • Two-strap RF antenna in Uragan-2M stellarator 
    Lozin, A.V.; Kovtun, Yu.V.; Moiseenko, V.E.; Maznichenko, S.M.; Kozulia, M.M.; Korovin, V.B.; Shapoval, A.N.; Kramskoy, E.D.; Pavlichenko, R.O.; Zamanov, N.V.; Makhov, M.M.; Krasyuk, A.Yu.; Siusko, Y.V.; Tymoshenko, A.I.; Listopad, V.M.; Wauters, T.; Kazakov, Ye.; Ongena, J. (Вопросы атомной науки и техники, 2020)
    A unshielded two-strap antenna had been installed in Uragan-2M. A vacuum chamber inner walls conditioning regime with the two-strap antenna is studied in a weak magnetic field. Plasma with the density nₑ~ (0.2…0.95)·10¹²сm⁻³ ...
  • Vacuum-plasma properties of stainless steel after impact of combined glow-microwave discharges in argon atmosphere 
    Glazunov, G.P.; Moiseenko, V.E.; Maznichenko, S.M.; Bondarenko, M.N.; Konotopskiy, A.L.; Tarasov, I.K.; Shapoval, A.N. (Вопросы атомной науки и техники, 2021)
    The experiments were carried out to determine the vacuum-plasma characteristics (mainly erosion and outgassing rate in a vacuum) of the stainless steel 12X18H10T before and after processing the walls of the vacuum chamber ...
  • Wall conditioning discharges driven by Т-shaped antenna in Uragan-2M 
    Lozin, A.V.; Kozulia, M.M.; Korovin, V.B.; Beletskii, A.A.; Glazunov, G.P.; Konotopskiy, A.L.; Baron, D.I.; Moiseenko, V.E.; Grigor’eva, L.I.; Chechkin, V.V.; Shapoval, A.N.; Makhov, M.M.; Konovalov, V.G. (Вопросы атомной науки и техники, 2018)
    New VHF antenna was introduced at Uragan-2M for VHF vacuum chamber wall conditioning without and with weak magnetic field. It was made as a T-shaped ¼ wavelength double rod. The T-shaped antenna is capable for slow waves ...