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  • Articles: DFG German National Licenses  (5)
  • 2000-2004  (5)
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  • Articles: DFG German National Licenses  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Electromagnetic vortices in electron-positron-ion plasmas with shear flow (2002)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 9 (2002), S. 474-479 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Two coupled nonlinear equations for a perturbed electromagnetic field in an electron-positron-ion plasma with shear flow, embedded in a nonuniform magnetic field, are derived and solved analytically. The nonlinear solutions of these equations are found in the form of tripolar vortices. The linear instability condition is also discussed. It is found that the presence of ions can play a significant role in nonlinear dynamics, even if the density of ions is of the order of 10−3 as compared to the densities of the lighter species. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1436126
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Role of quasineutrality in drift waves (2001)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 8 (2001), S. 368-369 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The ambiguity in using the quasineutrality approximation to describe the low-frequency plasma perturbations in nonuniform magnetized plasmas is pointed out. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1329654
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Response to "Comment on ‘Role of quasineutrality in drift waves' " [Phys. Plasmas 8, 3519 (2001)] (2001)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 8 (2001), S. 3522-3522 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is asserted that the Comment of Shukla et al. [Phys. Plasmas 8, 3519 (2001)] does not focus on errors or mistakes in the original paper. It reproduces several results already quoted in the literature. Some of these results are not consistent. In the original paper only a procedural flaw in the previous investigations was pointed out just for the sake of clarity. It does not point out any big change in the results. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1373421
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of ion streaming and propagation direction on ion-acoustic solitary waves (2002)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 9 (2002), S. 724-726 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is found that ion streaming and the direction of propagation of the nonlinear structure are the factors which can determine the amplitude of the density hump in fully nonlinear ion-acoustic solitary waves. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1433663
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Can Magnetic Field Evolve from a Plasma Steady State? (2000)
    Springer
    Journal of fusion energy 19 (2000), S. 159-161 
    Details
    ISSN: 1572-9591
    Keywords: Spontaneous magnetic fields
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The time evolution of magnetic field from a steady state of an ideal unmagnetized plasma does not seem to be possible. The electric field produced to maintain the density gradient turns out to be curl-free, which is a result different from earlier investigations quoted in the literature. Some kind of perturbation or an external effect is necessary to produce magnetic fields. The electron inertia can play a vital role in electromagnetic instabilities. Therefore, the magneto-hydrodynamic (MHD) models used to study magnetic field generation should be modified especially to look into the system's evolution from zero time when the field is zero in the ideal unmagnetized plasma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1013922313341
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    Paper (German National Licenses)
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