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  • American Institute of Physics (AIP)  (2)
  • Cambridge University Press
  • 1990-1994  (2)
  • 1980-1984
  • 1991  (2)
Collection
Publisher
Years
  • 1990-1994  (2)
  • 1980-1984
Year
  • 1
    Electronic Resource
    Electronic Resource
    Comments on "Structure of the plasma sheath in collisional to weakly collisional plasmas'' [Phys. Fluids B 2, 647 (1990)] (1991)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 3 (1991), S. 1300-1301 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Recently, Zawaideh et al. published a paper [Phys. Fluids B 2, 647 (1990)] asserting that they had obtained, from a more accurate set of fluid equations, physically reasonable plasma sheath solutions of an oscillating nature violating Bohm's criterion. In contrast to this statement, it is shown here that the violation of Bohm's criterion is based on an incorrect interpretation of the plasma sheath concept and that the oscillations are due to an incorrect initial condition in the calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.859823
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The plasma–sheath transition in an asymmetric collisionless plasma (1991)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 3 (1991), S. 838-846 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The plasma–sheath problem (λD → 0) for an asymmetric warm collision-free plasma is solved in plane parallel geometry. To this end Emmert's model source term [Phys. Fluids 23, 803 (1980)] is generalized to account for a superimposed plasma drift. The quasineutral plasma approximation results in a system of coupled integral equations that can be solved analytically. In contrast to Emmert's symmetric model the upstream facing sheath edge shows the usual field singularity. At the downstream facing sheath edge, a finite field strength and an oversatisfied Bohm criterion are found. These results are in full agreement with general considerations on the Bohm criterion and on the sheath edge field singularity [Phys. Fluids B 1, 961 (1989)].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.859879
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    Paper (German National Licenses)
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