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  • 2000-2004  (8)
  • 2002  (8)
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  • 2000-2004  (8)
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  • 1
    Electronic Resource
    Electronic Resource
    Comment on "Stimulated scattering of a light wave in a dusty plasma" [Phys. Plasmas 8, 5053 (2001)] (2002)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 9 (2002), S. 1478-1479 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The theory of stimulated scattering of a light wave in a dusty plasma is re-examined, taking into account the dust charge fluctuations. It is shown that the latter somewhat modify the dust-acoustic waves which are involved in the scattering process. The present results significantly improve those of Lee [Phys. Plasmas 8, 5053 (2001)]. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1446459
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Obliquely propagating electron-acoustic solitary waves (2002)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 9 (2002), S. 1474-1477 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A theoretical investigation is carried out for understanding the properties of obliquely propagating electron-acoustic solitary waves (EASWs) in a magnetized plasma whose constituents are a cold magnetized electron fluid, hot electrons obeying a vortex-like distribution, and stationary ions. It is found that the present plasma model supports EASWs having a positive potential, which corresponds to a dip (hump) in the cold (hot) electron number density. The effects of the external magnetic field and the obliqueness are found to significantly change the basic properties (viz. the amplitude and the width) of the EASWs. The present investigation can be of relevance to the electrostatic solitary structures observed in various space plasma environments (viz. the cusp of the terrestrial magnetosphere, the geomagnetic tail, the auroral regions, etc.). © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1462635
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Envelope solitons and nonstationary shocks created by intense neutrino beams in dense plasmas (2002)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 9 (2002), S. 3625-3628 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The nonlinear interaction between intense neutrino beams and sound waves in dense plasmas is considered. Accordingly, a Schrödinger-type equation is derived for the amplitude wave function of neutrinos interacting with a background plasma via the weak Fermi force. The neutrino driving (ponderomotive) force pushes the plasma electrons locally, thereby creating space charge electric fields through which the inertial ions are reinforced. It is shown that the nonlinearly coupled neutrinos and the ion sound perturbations are responsible for the formation of stationary envelope solitons and nonstationary shocks. The relevance of these nonlinear structures to supernova explosions is pointed out. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1488142
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  • 4
    Electronic Resource
    Electronic Resource
    Zonal flow excitation by Shukla–Varma modes in a nonuniform dusty magnetoplasma (2002)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 9 (2002), S. 3636-3638 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The nonlinear coupling between the Shukla–Varma (SV) modes and the zonal flows in a nonuniform dusty magnetoplasma is considered. By using a two-fluid model and the guiding center particle drifts, a pair of coupled mode equations is obtained. The latter are Fourier analyzed to obtain a nonlinear dispersion relation, which exhibits the excitation of zonal flows by the ponderomotive force of the SV modes. The increment of the parametrically excited zonal flows is presented. The relevance of our investigation to laboratory and space plasmas is discussed. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1496084
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  • 5
    Electronic Resource
    Electronic Resource
    Comment on "Oscillating two-stream instability in ionospheric heating experiments" [Phys. Plasmas 9, 1456 (2002)] (2002)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 9 (2002), S. 3639-3640 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is noted that the coupled mode equations of Kuo [Phys. Plasmas 9, 1456 (2002)] can be extended for studying the oscillating two-stream instability of high-frequency electrostatic (HFES) waves in the Earth's ionosphere where Joule heating of electrons in the HFES wave fields play a significant role. Accordingly, a complete set of equations governing the nonlinear coupling between HFES waves and nonresonant density and temperature perturbations including the HFES ponderomotive force and thermal nonlinearity is presented. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1491531
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  • 6
    Electronic Resource
    Electronic Resource
    Cylindrical and spherical dust ion–acoustic solitary waves (2002)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 9 (2002), S. 1468-1470 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The properties of cylindrical and spherical dust ion–acoustic solitary waves (DIASWs) in an unmagnetized dusty plasma, whose constituents are inertial ions, Boltzmann electrons, and stationary dust particles, are investigated by employing the reductive perturbation method. The modified Korteweg–de Vries equation is derived and its numerical solutions are obtained. It has been found that the properties of the DIASWs in a nonplanar cylindrical or spherical geometry differ from those in a planar one-dimensional geometry. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1458030
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  • 7
    Electronic Resource
    Electronic Resource
    Enhanced electromagnetic emission from a dusty plasma (2002)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 9 (2002), S. 1043-1045 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is shown how enhanced electromagnetic emission (EEE) is induced when large amplitude electromagnetic waves scatter off acoustic-like modes in a dusty plasma. Following the formalism of standard parametric interactions and using the Rostoker superposition principle, a general expression for the ensemble average of the square of the vector potential of EEE is derived. The result should be useful in deducing the plasma parameters in-situ when intense radar beams are used for the diagnosis of the polar mesospheric summer echos in association with low-frequency irregularities. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1446878
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  • 8
    Electronic Resource
    Electronic Resource
    A dipolar vortex in a magnetized pair plasma containing nonuniform flows (2002)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 9 (2002), S. 806-810 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The linear and nonlinear properties of electromagnetic waves, which are excited by a nonuniform electron current almost parallel to the magnetic field lines, are studied in a pair (electron–positron) plasma. The strongly nonlinear stage of weakly interacting modes is controlled by a vector-product type nonlinearity. The latter is responsible for the formation of a dipolar vortex whose salient features are described analytically. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1446877
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