Перегляд за автором "Kovalchuk, I.K."

Сортувати за: Порядок: Результатів:

  • Chaotic decayes in resonators filled with rare plasma 
    Antonov, A.N.; Buts, V.A.; Kovalchuk, I.K.; KovpikKovpik, O.F.; Kornilov, E.A.; Svichensky, V.G.; Tarasov, D.V. (Вопросы атомной науки и техники, 2008)
    The results of processes theoretical and experimental investigation of the broadband chaotic HF oscillations in the electrodynamics structure with rare plasma are presented. They are based on the nonlinear decay of HF wave ...
  • Chaotic dynamics of beam particle interacting with standing wave field of short cavity 
    Buts, V.A.; Manuilenko, O.V.; Kovalchuk, I.K.; Tolstoluzhsky, A.P. (Вопросы атомной науки и техники, 2001)
    Chaotic dynamics of nonrelativistic beam particles interacting with a standing wave field of a short cavity under conditions closed to Cherenkov’s resonance was studied. The criterion of development of stochastic beam ...
  • Control of wave interaction processes in plasma 
    Buts, V.O.; Kovalchuk, I.K.; Tolstoluzhsky, O.P.; Zagorodny, A.G. (Вопросы атомной науки и техники, 2021)
    The results of processes investigation of nonlinear interaction of wave in plasma were expounded. First of all the mechanisms of the processes control of three frequencies wave interaction were considered. It was shown ...
  • Dynamical chaos rise in the system of large number of nonlinear coupled oscillators 
    Buts, V.A.; Kovalchuk, I.K.; Tarasov, D.V. (Вопросы атомной науки и техники, 2007)
    The problem of dynamical chaos arising in distributed systems is considered. It was shown that in many cases it is possible to allocate relatively isolated subsystem which may be simpler for investigation. We suppose that ...
  • Dynamics of three wave stochastic decays in nonlinear matter 
    Buts, V.A.; Kovalchuk, I.K. (Вопросы атомной науки и техники, 2016)
    In the present work the transition of decay instability into stochastic regime in a nonlinear media is analyzed for a magnetoactive plasma and for the ferrite magnetized to the saturation level. It was shown that parameter ...
  • Features of stochastic decay in the magnetoactive plasma 
    Buts, V.A.; Kovalchuk, I.K. (Вопросы атомной науки и техники, 2018)
    The regular and stochastic decay processes of transverse electromagnetic waves in the magnetoactive plasma investigated. The essential attention noted to decay into oscillations with dynamics that takes into account ion ...
  • Features of weakly nonlinear wave interaction 
    Buts, V.A.; Kovalchuk, I.K.; Tolstoluzhsky, A.P. (Вопросы атомной науки и техники, 2019)
    Regular and stochastic dynamics of three wave interaction and dynamics of cascades of such three wave processes were investigated. It was shown that matrix elements of wave interaction are inversely proportional to square ...
  • Formation of discrete spatial temporal structures in the nonstationary inhomogeneous plasma 
    Buts, V.A.; Kovalchuk, I.K. (Вопросы атомной науки и техники, 2015)
    The traditional approach in the linear electrodynamics is using of spectral method. However, in many cases, the physical process is defined by large number of spectral components. In this case the spectral approach is not ...
  • Instability of connected oscillator system under action of multiplicative fluctuations 
    Buts, V.A.; Kovalchuk, I.K. (Вопросы атомной науки и техники, 2003)
    Studying of many oscillatory and wave processes is reduced to the studying of dynamics of connected oscillators. Parameters of these oscillators may be under influence fluctuation forces. Instability in this case develops. ...
  • Investigation of chaotic decay in the resonator filled with plasma 
    Antonov, A.N.; Buts, V.A.; Kovalchuk, I.K.; Kovpik, O.F.; Kornilov, E.A.; Svichensky, V.G.; Tarasov, D.V. (Вопросы атомной науки и техники, 2011)
    Some investigations of the results of chaotic waves decay in circular cylindrical resonator partially filled with magnetoactive plasma are presented. If external magnetic field is uniform there is a good qualitative ...
  • Investigation of posibility of energy transfer to plasma ions by oscillations with large amplitude on frequency of electron cyclotron resonance in magnetic trap 
    Antipov, V.S.; Antonov, A.N.; Buts, V.A.; Kovalchuk, I.K.; Kornilov, E.A.; Vinokurov, V.A. (Вопросы атомной науки и техники, 2018)
    Process of action of powerful transverse electromagnetic wave on plasma in the magnetic trap is studied theoretically and experimentally. Interaction of wave-wave type is taken into account in the theoretical model. ...
  • Parametric stochastic instability of connected oscillator 
    Buts, V.A.; Kovalchuk, I.K. (Вопросы атомной науки и техники, 2003)
    Oscillators are used for investigation different physical processes, for example, oscillation in plasma, modeling of continuous medium ets. The large interest is fluctuation influence on oscillation processes. It is well ...
  • Quality estimation the of maximum-likelihood algorithm to the task of space distribution of elements by PIXE 
    Kovalchuk, I.K.; Levenets, V.V.; Shchur, A.O. (Вопросы атомной науки и техники, 2008)
    The numerical research is carried out for different approximations of likelihood-function and Fisher's matrix with reference to maximum-likelihood algorithm at determination of impurity profile of certain chemical element ...
  • Stabilization of beam instability as a result of development of local instability in wave-wave interaction 
    Buts, V.А.; Kovalchuk, I.K.; Kornilov, E.A.; Tarasov, D.V. (Вопросы атомной науки и техники, 2003)
    The new mechanism of stabilization of beam instability is proposed. The considered mechanism plays a special role at stabilization of beam instability in plasma systems with small size of interaction area of a beam of ...
  • Stabilization of beam instability in wave-wave interaction 
    Buts, V.A.; Kovalchuk, I.K.; Kornilov, E.A.; Tarasov, D.V. (Вопросы атомной науки и техники, 2005)
    The new mechanism of stabilization of beam instability is proposed. The basis of this mechanism is the process of dynamical chaos at weak nonlinear interaction of waves. It is shown that mechanisms of stochastic decay are ...
  • The peculiarities of stochastic heating of the plazma in plasma resonator 
    Antonov, A.N.; Buts, V.A.; Kovalchuk, I.K.; Kovpik, O.F.; Kornilov, E.A.; Svichensky, V.G.; Tarasov, D.V.; Scherbina, A.N. (Вопросы атомной науки и техники, 2014)
    The results of the investigation of the dynamics of particles and waves at the interaction of intense electromag-netic pulses with plasmas are presented. It is shown that under conditions when regimes with dynamic chaos ...
  • The regular and chaotic dynamics at weak-nonlinear interaction of waves 
    Buts, V.A.; Kovalchuk, I.K.; Tarasov, D.V.; Tolstoluzhsky, A.P. (2010)
    It is shown that different regimes at weak-nonlinear interaction of waves are possible: regular regimes with the growth of degree of coherence of some waves which take part in interaction and also chaotic regimes. It is ...
  • Using stochastic decomposition processes for formation spectra of oscillations 
    Antonov, A.N.; Buts, V.A.; Kovpik, O.F.; Kornilov, E.A.; Kovalchuk, I.K.; Svichenskij, V.G. (Вопросы атомной науки и техники, 2006)
    In work results of research of spread spectrum of superhigh-frequency oscillations in the polymodal resonator filled by plasma, placed in a magnetic field, due to stochastic disintegration of own modes of the resonator ...