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Magnetic curvature: Difference between revisions
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is a unit vector along the magnetic field. | is a unit vector along the magnetic field. | ||
When ''B'' is locally a circle section, then ''& | When ''B'' is locally a circle section, then ''κ'' points towards the centre of the circle. | ||
A plasma is stable against curvature-driven instabilities (e.g., ballooning modes) when | A plasma is stable against curvature-driven instabilities (e.g., ballooning modes) when | ||