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Effective plasma radius: Difference between revisions
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→Based on flux surfaces
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(using ''V'' = 2 π<sup>2</sup>''Rr''<sub>eff</sub><sup>2</sup>), or the surface area ''S(ψ)'' of a flux surface | (using ''V'' = 2 π<sup>2</sup>''Rr''<sub>eff</sub><sup>2</sup>), or the surface area ''S(ψ)'' of a flux surface | ||
(using ''S'' = 4 π<sup>2</sup>''Rr''<sub>eff</sub>). | (using ''S'' = 4 π<sup>2</sup>''Rr''<sub>eff</sub>). | ||
Here, ''R'' is the major radius of the [[:Wikipedia:Torus|torus]]. | Here, ''R'' is the [[Toroidal co-ordinates|major radius]] of the [[:Wikipedia:Torus|torus]]. | ||
One can avoid making an (arbitrary) choice for ''R'' by defining ''r''<sub>eff</sub> = 2''V/S'' or ''r''<sub>eff</sub> = ''dV/dS''. | One can avoid making an (arbitrary) choice for ''R'' by defining ''r''<sub>eff</sub> = 2''V/S'' or ''r''<sub>eff</sub> = ''dV/dS''. | ||