Internal tilting and classical transport for field-reversed configurations based on the Maschke–Hernegger solution

Abstract

It is shown that elongated field-reversed configurations based on the Maschke–Hernegger solution of the Grad–Shafranov equation are unstable to internal tilting. The particle transport properties across the flux surfaces of such a model are also considered in the limit of large elongation of the separatrix. An estimation of the time of confinement of particles in terms of classical conductivity, which is lower than previous estimates, is given.