MHD Equilibrium with Reversed Current Density and Magnetic Islands Revisited: the Vacuum Vector Potential Calculus

F. L. BRAGA

doi:10.1088/1009-0630/15/10/05

Plasma Science and Technology > 2013 > 15(10): 985-988. > DOI: 10.1088/1009-0630/15/10/05

F. L. BRAGA. MHD Equilibrium with Reversed Current Density and Magnetic Islands Revisited: the Vacuum Vector Potential Calculus[J]. Plasma Science and Technology, 2013, 15(10): 985-988. DOI: 10.1088/1009-0630/15/10/05

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MHD Equilibrium with Reversed Current Density and Magnetic Islands Revisited: the Vacuum Vector Potential Calculus

F. L. BRAGA(F. L. BRAGA)

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Received Date: July 24, 2012

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Abstract

Abstract

The solution of Grad-Shafranov equation determines the stationary behavior of fu- sion plasma inside a tokamak. To solve the equation it is necessary to know the toroidal current density profile. Recent works show that it is possible to determine a magnetohydrodynamic (MHD) equilibrium with reversed current density (RCD) profiles that presents magnetic islands. In this work we show analytical MHD equilibrium with a RCD profile and analyze the structure of the vacuum vector potential associated with these equilibria using the virtual casing principle.
- magnetohydrodynamics,
- vacuum vector potential,
- reversed current density,
- magnetic islands

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