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 ''&\kappa;'' points towards the centre of the circle.
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