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Boozer coordinates: Difference between revisions
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== Contravariant representation of the magnetic field in Boozer coordinates == | == Contravariant representation of the magnetic field in Boozer coordinates == | ||
The | The [[Flux_coordinates#Covariant_Form|covariant representation]] of the field is also relatively simple when using Boozer coordinates, since the angular covariant <math>B</math>-field components are flux functions in these coordinates | ||
:<math> | :<math> | ||
\mathbf{B} = -\tilde\eta\nabla\psi + \frac{I_{tor}}{2\pi}\nabla\theta + \frac{I_{pol}^d}{2\pi}\nabla\phi~. | \mathbf{B} = -\tilde\eta\nabla\psi + \frac{I_{tor}}{2\pi}\nabla\theta + \frac{I_{pol}^d}{2\pi}\nabla\phi~. | ||