Electronic Resource
New York, NY
:
American Institute of Physics (AIP)
Physics of Fluids
1 (1989), S. 591-597
ISSN:
1089-7666
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The Chew–Goldberger–Low (CGL) double adiabatic model [Proc. R. Soc. London Ser. A 236, 112 (1956)] is used to study the linear m=0 (sausage) mode in a Z pinch operating in the collisionless, small ion Larmor radius regime. The model is valid in this case since the parallel heat flow is identically zero. A necessary and sufficient condition for stability, applicable to arbitrary (anisotropic) Z-pinch equilibria, is derived and the eigenvalue equation is solved for two classes of isotropic equilibria. Growth rates are shown to be lower than those of ideal magnetohydrodynamics (MHD). It is found that, in contrast to ideal MHD, the CGL eigenfunctions are characterized by an unperturbed inner region.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.859119
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