Linear analysis and 3D hybrid simulation study of z-pinch instabilities in the presence of nonideal MHD effects
作者： V.I. Sotnikov , L. Wanex , B.S. Bauer , I. Paraschiv , J.N. Leboeuf
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摘要: The development of z-pinch instabilities in the presence Hall term, finite Larmor radius effects (FLR), and axial magnetic field is being investigated. linear stage instability studied with linearized magnetohydrodynamic (MHD) equations based on fluid model. Results for growth rates as a function sheared flow, field, an emphasis sausage kink instabilities, are reported. We also present simulations performed 3D version hybrid code CAM-CL algorithm Matthews, AP (1994) These serve dual purpose comparing MHD analysis investigating nonlinear kinetic overall aim to characterize combined influence (FLR) modes. Calculations have been carried out several regimes respect parameter /spl epsiv/=c//spl omega//sub pi/r/sub 0/ (c speed light, Opi ion plasma frequency r/sub radius), without field. used calculations has varied from Br/sub 0z/=0 0z/=0.5, where amplitude measured relative azimuthal created by current z-pinch. initiated study time density profiles produced process long pulse Z-pinch implosions Saturn. Apruzese, JP et al. (2001). allows multiple species charges. This contains term resistivity equation. can thus model realistic wire array loads wires composed different materials, example Al (95%) Mg (5%), like
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