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  • 1
    Electronic Resource
    Electronic Resource
    Anisotropic pressure tokamak equilibrium and stability considerations (1987)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 30 (1987), S. 2796-2805 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Investigation of the effect of pressure anisotropy on tokamak equilibrium and stability is made with a magnetohydrodynamic model. Realistic perpendicular and parallel pressure distributions, P⊥(ψ,B) and P(parallel)(ψ,B), are obtained by solving a one-dimensional Fokker–Planck equation for neutral beam injection to find a distribution function f (E,v(parallel)/v) at the position of minimum field on each magnetic surface and then using invariance of the magnetic moment to determine its value at each point on the surface. The shift of the surfaces of constant perpendicular and parallel pressure from the flux surfaces depends strongly on the angle of injection. This shift explains the observed increase or decrease in the stability conditions. Estimates of the stabilizing effect of hot trapped ions indicate that a large fraction must be nonresonant and thus decoupled from the bad curvature before it becomes important.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.866505
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    General solution for an asymmetric snowplow in Z-pinch-like geometry (1992)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 4 (1992), S. 3440-3442 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The simple snowplow model has been extended into two dimensions in an x-y geometry for the study of radially imploding plasmas with azimuthal density asymmetries. When reduced to dimensionless form à la Krall and Trivelpiece [Principles of Plasma Physics (McGraw-Hill, New York, 1973), pp. 123–128], the resultant family of solutions depend upon two parameters rather than one. A numeric algorithm for the solution of these equations has been developed and solutions for several choices of the parameters are shown.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860400
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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