Перегляд за автором "Petrushenya, A.A."

Сортувати за: Порядок: Результатів:

  • Behavior dynamics of low-frequency MHD-fluctuations and main plasma parameters in U-3M torsatron in RF-heating mode 
    Pashnev, V.K.; Sorokovoy, E.L.; Petrushenya, A.A.; Ozherel’ev, F.I.; Baron, D.I. (Вопросы атомной науки и техники, 2016)
    A significant decrease in the intensity of low-frequency MHD-activity is accompanied by sharp increase of plasma energy content in U-3M torsatron. Plasma is generated and heated by RF-fields with frequency of w = 0.8w(ci) ...
  • Creation, accumulation and confinement of non-neutral plasmas in stellarator magnetic configuration 
    Volkov, Е.D.; Petrushenya, A.A.; Tarasov, I.K.; Batrakov, A.B.; Lonin, Yu.F.; Rudnev, N.I. (Вопросы атомной науки и техники, 2005)
    The experiments on creation, accumulation and confinement of non-neutral plasma in stellarator system are performed in Institute of Plasma Physics, NSC KIPT. The main goals of these studies are to investigate the behavior ...
  • Dynamics of longitudinal plasma current during RF plasma heating in torsatron U-3M 
    Pashnev, V.K.; Sorokovoy, E.L.; Petrushenya, A.A.; Voitsenya, S.V.; Dreval, N.B.; Nemov, V.V. (Вопросы атомной науки и техники, 2015)
    When investigating plasma parameters in U-3M torsatron some magnetic diagnostics are used: diamagnetic loop, Rogovski coil, and saddle coil. Before the last experimental campaign the set of 15 magnetic probes (Mirnov coils) ...
  • Dynamics of the main plasma parameters during spontaneous transition into the mode of improved confinement in torsatron U-3M 
    Pashnev, V.K.; Sorokovoy, E.L.; Petrushenya, A.A.; Mironov, Yu.K.; Konovalov, V.G.; Shapoval, A.N.; Slavnyj, A.S.; Dreval, M.B.; Pugovkin, A.P. (2010)
    The work [1] contains discussion about the changes in plasma energy content and energy lifetime during the transition into the mode of improved confinement at RF-heating in torsatron U-3M in range of rare collision frequencies ...
  • Electromagnetic oscillations at the edge of the Uragan-3M plasma 
    Pashnev, V.K.; Tarasov, I.K.; Tarasov, M.I.; Sitnikov, D.A.; Tsybenko, S.A.; Pinos, I.B.; Stepanov, K.N.; Olshansky, V.V.; Shvets, O.M.; Sorokovoy, E.L.; Petrushenya, A.A.; Lozin, A.V.; Pugovkin, A.P.; Mironov, Yu.K.; Shapoval, A.N. (Вопросы атомной науки и техники, 2013)
    In the Uragan-3M torsatron the plasma is ICRF heated with the use of antennas of different types. The objective of this work is to study the electromagnetic wave propagation outside the plasma confinement volume and the ...
  • Energy confinement in the torsatron Uragan-3M during the RF-heating mode 
    Pashnev, V.K.; Burchenko, P.Ya.; Lozin, A.V.; Kotsubanov, V.D.; Kulaga, A.Ye.; Krasnyj, V.V.; Mironov, Yu.K.; Nikol’skii, I.K.; Petrushenya, A.A.; Romanov, V.S.; Sitnikov, D.A.; Sorokovoy, Ed.L.; Tsybenko, S.A.; Zamanov, N.V. (Вопросы атомной науки и техники, 2008)
    Energy confinement time of plasma in torsatron U-3M was measured both during quasi-stationary stady of RF-discharge and after RF-power cut-off. Power absorbed by plasma in the confinement region was estimated. A mechanism ...
  • Features of the upgraded magnetic diagnostics application in the U-2M torsatron 
    Pashnev, V.K.; Petrushenya, A.A.; Sorokovoy, E.L.; Ozherel’ev, F.I. (Вопросы атомной науки и техники, 2019)
    Modernized magnetic sensor systems have been developed and tested to carry out the magnetic measurements on the U-2M torsatron. The effect of the metallic environment, high-frequency noise and the instability of the external ...
  • Generation of compensated ion beams from source with oscillating electrons 
    Borisko, V.N.; Petrushenya, A.A.; Yunakov, N.N. (Вопросы атомной науки и техники, 2000)
    The generation of compensated ion beams from electrically unsymmetrical reflecting discharge was investigated. The spatial location of a compensation zone, the optimal values of operating gas pressures Ð = (0,8 ÷ 1)×10⁻⁴ ...
  • Hydrogen recycling during RF plasma heating in the U-3M torsatron 
    Pashnev, V.K.; Petrushenya, A.A.; Ponomarenko, N.P.; Sorokovoy, E.L. (Вопросы атомной науки и техники, 2014)
    The hydrogen recycling behavior has been studied during the plasma experiments in torsatron U-3M. For this purpose, the time dependence of the molecular hydrogen pressure in the U-3M torsatron vacuum chamber in the modes ...
  • Influence of gas mixture with various mass numbers of gases on operation pressure range of plasma electron source with hollow cathode 
    Borisko, V.N.; Petrushenya, A.A. (Вопросы атомной науки и техники, 2002)
    The influence of electric nonsymmetry in plasma electron source with hollow cathode as well as gas mixture with various mass numbers of gases on performances of the source was investigated. The operating pressure ranges ...
  • Influence of plasma with finite pressure on magnetic configuration of torsatron U-3M 
    Pashnev, V.K.; Burchenko, P.Ya.; Kulaga, A.Ye.; Lozin, A.V.; Mironov, Yu.K.; Petrushenya, A.A.; Romanov, V.S.; Sitnikov, D.A.; Sorokovoy, Ed.L.; Tsybenko, S.A.; Zamanov, N.V. (Вопросы атомной науки и техники, 2009)
    Series of experiments on generation of mode with high β (up to about 1.3%) in torsatron U-3M were performed using nitrogen as working gas. The dependence of average β from input power was obtained. The average plasma ...
  • Magnetic diagnostics for torsatron U-2M 
    Pashnev, V.K.; Petrushenya, A.A.; Sorokovoy, E.L.; Krasnyj, V.V. (Вопросы атомной науки и техники, 2011)
    The features of application of magnetic diagnostics in torsatron U-2M are described. The methods to account for the influence of the metal environment and induced magnetic fields on the results of magnetic measurements ...
  • Methods for measuring hydrogen balance in vacuum chamber of U-3M torsatron during plasma experiments 
    Pashnev, V.K.; Petrushenya, A.A.; Bondarenko, V.N.; Sorokovoy, E.L.; Ponomarenko, N.P.; Ozherelyev, F.I. (Вопросы атомной науки и техники, 2017)
    The experimental method was developed for evaluation of a hydrogen particle flux balance over a wide range of operating conditions in the Uragan-3M torsatron (U-3M) in the course of RF discharges. Standard pressure gauges ...
  • MHD plasma activity in the U-3M torsatron during the RF cleaning mode with the magnetic field Bφ(0) = 0.02 T 
    Pashnev, V.K.; Sorokovoy, E.L.; Petrushenya, A.A.; Ozherel’ev, F.I. (Вопросы атомной науки и техники, 2019)
    In the considered mode of cleaning, plasma was created and heated by antennas at frequencies fRF₁ ≈ 7.9 and fRF₂ ≈ 8.8 MHz, the magnitude of the constant magnetic field was Bφ(0) ≈ 0.02 T, so that the ion cyclotron frequency ...
  • Modeling of time behavior of H, H₂ neutral densities, and Hα line intensity in the RF plasma of the Uragan-3M torsatron 
    Bondarenko, V.N.; Petrushenya, A.A. (Вопросы атомной науки и техники, 2019)
    In this paper, the results of computer simulation of time behavior of hydrogen atoms and molecules in the plasma produced by RF power in the Uragan-3M torsatron are presented. The evolution of the density of fast chargeexchange ...
  • Structure of intensive MHD fluctuations in torsatron in the mode of low frequency collisions 
    Pashnev, V.K.; Sorokovoy, E.L.; Petrushenya, A.A.; Ozherel’ev, F.I. (Вопросы атомной науки и техники, 2017)
    The structure of MHD-fluctuations in the frequency range 0.5…52 kHz of RF produced plasma was studied in the Uragan-3M torsatron by the use of magnetic probes placed in one of the poloidal cross-sections. Three types of ...
  • Structure of MHD fluctuations in the torsatron U-3M in steady-state stage of discharge 
    Pashnev, V.K.; Sorokovoy, E.L.; Petrushenya, A.A.; Ozherel’yev, F.I. (Вопросы атомной науки и техники, 2018)
    Study of MHD fluctuations was performed in quasi-stationary mode of weakly collisional discharge in torsatron U-3M in frequency range 0.5…70 kHz. The fluctuations of the magnetic field were detected in the following ...
  • 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.
  • The reflection and re-emission coefficients of hydrogen particles impinging from plasma on the wall in the torsatron Uragan-3M 
    Bondarenko, V.N.; Petrushenya, A.A. (Вопросы атомной науки и техники, 2017)
    The modelling of the radial emissivity profiles of Hα and Hβ lines radiated from hydrogen plasma of the torsatron Uragan-3M in a typical operational regime requires the usage of the programming code KN1D to consider a ...
  • Transition to the improved confinement mode in torsatron U-3M in range of rare collision frequencies 
    Pashnev, V.K.; Sorokovoy, E.L.; Berezhnyj, V.L.; Burchenko, P.Ya.; Volkov, E.D.; Krasnyj, V.V.; Lozin, A.V.; Mironov, Yu.K.; Petrushenya, A.A.; Pinos, I.B.; Skibenko, A.I.; Slavnyj, A.S.; Dreval, M.B.; Kulaga, A.Ye.; Tsybenko, S.A.; Es’kov, A.Yu. (2010)
    Transition to the mode of improved plasma confinement in U-3M facility earlier was discussed in works [1-3]. In these studies discussed the various processes in the confinement volume and in the peripheral plasma that ...