A cylindrical plasma column of radius a contains a coaxial magnetic fieldB=Bozand has a pressure profile

p=po cos^2(pi*r/2a.

calculate the maximum value of po

using this value of p[o calculate the diamagnetic currentj(r) and the total fieldB(r).

if the cylinder is bent into a torus with the lines of force closing upon themselves after a single turn this equilibrium in which the macroscopib forces are everywhere balanced is obviously disturbed. Is it possible to redistribute the pressure p(r,theta) in such a way that the equilibrium is restored