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  • 1
    Electronic Resource
    Electronic Resource
    Plasma kinetic effects in stochastic helical field (1994)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 1 (1994), S. 2566-2573 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The kinetic equation for a plasma in a stochastic electromagnetic helical field is constructed and studied. The kinetic equation contains an additional term, proportional to the helicity. The evolution of the main moments of the distribution function is considered. A solution describing the evolution of the distribution function for arbitrary initial conditions is found and possible consequences of presence of the helicity term are discussed. A model example is considered when a single-momentum electron beam with an inhomogeneous velocity profile creates a new particle flow in the transverse direction, so that the resulting flow also possesses the helicity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.870584
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  • 2
    Electronic Resource
    Electronic Resource
    Solutions of the plasma equilibrium within the magnetic field of a point dipole (1998)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 5 (1998), S. 3101-3115 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: For axial symmetry, in this study we report on analytical solutions of the magnetohydrodynamics (MHD) equilibrium of a plasma within the magnetic environment of a point dipole. Inside the plasma domain, the magnetic flux function is calculated for a given shape of the pressure profile. Another magnetic flux function is derived outside the plasma domain, where the pressure vanishes. Both functions and their normal derivatives are continuous through the boundary between the two domains; together they constitute the solution of our problem. A pressure profile that is a quadratic function of the magnetic flux function is used. It leads to an exact solution which is a simple function of the spherical coordinates. It is shown that, in this situation, the plasma energy is distributed over the entire plasma domain. This solution is well suited as a magnetospheric model. The magnetic flux function determined outside the plasma domain is expressed by a very general formula that is valid for wide classes of both the pressure profiles and the shape of a plasma exterior boundary. Far away from this boundary, as near the coordinate center, the magnetic field tends to be dipolar. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.873036
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The role of dissipation fluctuations on the generation of structures and the Kuramoto–Shivashinsky equation (1991)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 3 (1991), S. 1969-1971 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Using the Burgers equation as an example, it is shown that accounting for Gaussian fluctuations of dissipation leads to the Kuramoto–Shivashinsky equation. A generalized Kuramoto–Shivashinsky equation is derived and a mechanism of generation of structures due to dissipation fluctuations is investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.857927
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Negative viscosity and generation of dissipative solitons and zonal dissipative structures by drift waves (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 3513-3523 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this paper the stability of a drift wave in a plasma with dissipation due to ion viscosity is examined. If the wave amplitude exceeds a threshold value, determined by ion–ion collisions, large-scale perturbations (i.e., with scales much greater than the drift wavelength) grow. Maximum growth rate belongs to perturbations that are periodical along plasma inhomogeneity and constant in transverse directions, i.e., azimuthal direction in cylindrical geometry (zonal dissipative structures). The analysis of nonlinear stage of large-scale instability shows that the solitonlike large-scale structures of the electric field and vorticity are possible (dissipative solitons).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860359
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  • 5
    Electronic Resource
    Electronic Resource
    Negative viscosity for Rossby wave and drift wave turbulence (1998)
    Springer
    Journal of experimental and theoretical physics 86 (1998), S. 357-366 
    Details
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The possible occurrence of a “negative viscosity effect” is studied for Rossby wave and drift wave turbulence. It is assumed that (i) the space and time scales of the wave field are much smaller than the scales of the mean field, and (ii) the small-scale field is sufficiently weak, stationary, and maintained by an external source. Such a formulation is fruitful for studying the effects (characterized by the effective viscosity) of smaller-scale motions upon larger-scale ones. The criteria of large-scale instability due to the negative effective viscosity are derived for the coherent wave motions as well as for small-scale isotropic wave turbulence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.558436
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  • 6
    Electronic Resource
    Electronic Resource
    Interaction of a packet with random noise in Burgers' equation (1980)
    Springer
    Radiophysics and quantum electronics 23 (1980), S. 54-61 
    Details
    ISSN: 1573-9120
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01033399
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  • 7
    Electronic Resource
    Electronic Resource
    Turbulence of sawtooth waves (1977)
    Springer
    Radiophysics and quantum electronics 20 (1977), S. 714-719 
    Details
    ISSN: 1573-9120
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01040637
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    Paper (German National Licenses)
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