Linear analysis of magnetic and flow shear stabilization of Z-pinch instabilities

Journal Article · Fri Apr 15 00:00:00 EDT 2005 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.1862247· OSTI ID:20736483

Wanex, L F; Sotnikov, V I; Leboeuf, J N ^[1]

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1. University of Nevada, Reno, Nevada 89557 (United States)

A global normal mode stability analysis on the effect of radially sheared azimuthal flow and radially sheared magnetic fields on magnetohydrodynamic (MHD) instabilities in Z-pinch plasmas is presented. A linearized set of ideal MHD equations allows the investigation of plasmas with both magnetic shear and flow shear included in the plasma equilibrium. The stabilizing effects of sheared azimuthal flow and sheared axial magnetic field are presented. Here we show that radial shear in the functional form of a vortex is particularly efficient at reducing instability growth rates.

• OSTI ID: 20736483
• Journal Information: Physics of Plasmas, Vol. 12, Issue 4; Other Information: DOI: 10.1063/1.1862247; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
EQUILIBRIUM
LONGITUDINAL PINCH
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
PLASMA
PLASMA INSTABILITY
SHEAR
VORTICES