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Magnetic well: Difference between revisions
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The plasma will therefore prefer to move to a location where the volume to flux ratio (the ''specific volume'') is maximum. | The plasma will therefore prefer to move to a location where the volume to flux ratio (the ''specific volume'') is maximum. | ||
Assuming the existence of nested (toroidal) flux surfaces, labelled by | Assuming the existence of nested (toroidal) flux surfaces, labelled by <math>\psi</math>, and with volume <math>V(\psi)</math> and toroidal flux <math>\Phi(\psi)</math>, this specific volume is | ||
:<math>U = \frac{dV}{d\Phi}</math> | :<math>U = \frac{dV}{d\Phi}</math> | ||