Magnetic shear: Difference between revisions

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High values of magnetic shear provide stability, since the radial extension of helically resonant modes is reduced.
High values of magnetic shear provide stability, since the radial extension of helically resonant modes is reduced.
Negative shear also provides stability.
Negative shear also provides stability, possibly related to the shearing apart of convective cells, produced by curvature-driven instabilities, as the field lines twist around the torus.
<ref>[http://link.aip.org/link/?PHPAEN/3/2221/1 T.M. Antonsen, Jr., et al, ''Physical mechanism of enhanced stability from negative shear in tokamaks: Implications for edge transport and the L-H transition'', Phys. Plasmas '''3''', 2221 (1996)]</ref>
<ref>[http://link.aip.org/link/?PHPAEN/3/2221/1 T.M. Antonsen, Jr., et al, ''Physical mechanism of enhanced stability from negative shear in tokamaks: Implications for edge transport and the L-H transition'', Phys. Plasmas '''3''', 2221 (1996)]</ref>


== References ==
== References ==
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