Tokamak equilibrium with anisotropic pressure

Axisymmetric hydromagnetic equilibria are obtained, for the case of strongly anisotropic pressure, by an expansion in the inverse aspect ratio. The calculation is carried out by expanding the inverse Grad-Shafranov equation to second order. The calculation shows that non-circular distortion of the magnetic surfaces is driven to lower order than has previously been found. Many shaping harmonics are found to be present in this order