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  • Electronic Resource  (66)
  • 1990-1994  (27)
  • 1985-1989  (39)
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  • Electronic Resource  (66)
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  • 1
    Electronic Resource
    Electronic Resource
    Shielding of a slowly moving test charge in dusty plasmas (1994)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 1 (1994), S. 1362-1363 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The far-field potential of a slowly moving test charge in dusty plasmas is calculated accounting for the dust grain charge fluctuations. It is found that the latter cause a damping, which in turn gives rise to a dipole-like far-field potential. The presence of the dipole-like potential is attributed to the dust grain charge perturbations caused by the oscillating electron and ion currents induced by the motion of a test charge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.870736
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Damping and absorption of high-frequency waves in dusty plasmas (1994)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 1 (1994), S. 236-244 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: By employing standard statistical techniques of linear fluctuation theory, it is shown how the ensemble averages over statistical distributions of charged massive grains in a dusty plasma can result in "average'' dispersion relations for high-frequency electromagnetic and electrostatic waves. The dispersion relations admit solutions for complex frequencies and wave numbers, suggesting that the waves can be damped (Im ω≠0) or absorbed (Im k≠0) in a dusty plasma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.870826
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Formation of vortex chains in a nonuniform magnetized electron plasma (1994)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 1 (1994), S. 3505-3507 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is shown that the equations governing the dynamics of weakly interacting medium-frequency electrostatic waves in a nonuniform magnetoplasma with a fixed ion background can have localized vortex chain solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.870927
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Ion-temperature-gradient-driven turbulence in partially ionized plasmas with sheared parallel flow (1993)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 5 (1993), S. 1911-1913 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The ion-temperature-gradient(ITG)-driven electrostatic modes are investigated in the presence of the equilibrium sheared parallel flow in partially ionized magnetoplasmas. It is found that the source of free energy stored in the ion-temperature inhomogeneity can be coupled to electrostatic fluctuations due to the ion–neutral drag. The present collisional instability can possibly account for nonthermal fluctuations and anomalous cross-field ion thermal transport in low-temperature partially ionized magnetoplasmas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860773
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Stimulated scattering instabilities of electromagnetic waves in collisional plasmas (1993)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 5 (1993), S. 4253-4255 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effects of nonlocal heat transport on stimulated scattering instabilities of electromagnetic waves are investigated employing the recently derived expression for the electron number density perturbations that are driven by the ponderomotive and thermal forces in high Zi collisional plasmas. The growth rates and the threshold conditions for stimulated Brillouin and stimulated Compton scattering, as well as modulational instabilities, are obtained. It is found that the growth rates of the scattering instabilities of electromagnetic waves are considerably enhanced due to nonlocal electron heat conduction in collisional plasmas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860592
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Nonlinear interaction of photons and phonons in a relativistically hot electron–positron gas (1993)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 5 (1993), S. 233-235 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Nonlinear interaction between intense photons and sound waves in a relativistically hot electron–positron plasma is considered. The modulational instability of a constant amplitude photon is investigated and the formation of polarons (localized photon envelopes trapped in a self-created density cavity) is discussed. The relevance of this investigation to astrophysical plasmas is pointed out.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860863
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  • 7
    Electronic Resource
    Electronic Resource
    Convective cells in nonuniform dusty plasmas (1993)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 5 (1993), S. 236-237 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is shown that purely damped convective cell modes acquire a real frequency in the presence of static charged dust grains in a nonuniform magnetized dusty plasma. The frequency of the two-dimensional mode is induced by the plasma density gradient and corresponds to charge density waves arising out of the plasma non-neutrality. The dynamics of weakly interacting finite-frequency convective cell modes is governed by the generalized Navier–Stokes equation. The presence of the new term arising from the dust inhomogeneity in the latter provides the possibility of a two-dimensional dipolar vortex solution in dusty plasmas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860864
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Self-modulation of magnetic electron drift waves (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 2677-2679 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The self-modulation of a large-amplitude magnetic electron drift (MED) wave is considered. It is found that the dynamics of the modulated wave packet is governed by the cubic Schrödinger equation. Since, in the latter, the product of the group dispersion and the nonlinear frequency shift is negative, it turns out that the one-dimensional nonlinear modulated MED wave packet propagates in the form of a rarefactional pulse. The present nonlinear structure can possibly be associated with the magnetic cavity observed in the vicinity of the magnetopause.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860188
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Hydrodynamic theory for the magnetization current in a collisionless plasma (1990)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 2 (1990), S. 34-37 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is demonstrated that the magnetization current, which arises from the interaction of high-frequency electromagnetic waves with hot collisionless, unmagnetized electron plasmas, can be derived by means of the ten-moment system of hydrodynamic equations. It is pointed out that the magnetization current is solely associated with the thermal motion of the electrons, and that it therefore does not appear in cold plasmas. This expression for the magnetization current agrees with those derived previously from kinetic theory. The present derivation provides, however, a comparatively much clearer physical picture of the origin of this current. In the limit where the phase velocity is much larger than the electron thermal velocity, a new result for the high-frequency induced vorticity of the plasma is obtained. It is also shown that the magnetization current in this paper is responsible for a novel scattering mechanism in which the high-frequency electromagnetic waves are scattered off vortex motions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.859536
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  • 10
    Electronic Resource
    Electronic Resource
    Electron energy transport by magnetic electron drift vortex waves (1989)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 1 (1989), S. 1333-1334 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is shown that magnetic electron drift vortex waves can cause electron energy transport in a nonuniform plasma. Using a quasilinear approach, an expression for the corresponding anomalous thermal conductivity is derived. The result may be relevant to the study of energy transport in laser-produced as well as other plasmas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.858959
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