Abstract

A pressure profile inside and outside a separatrix of a field-reversed configuration is determined by comparing three types of assumed pressure profiles with the radial profile of bremsstrahlung. It is found that the pressure profile is flatter near the field null than the rigid rotor profile. Edge-layer parameters as beta value at the separatrix, separatrix radius, and edge-layer width are determined from the pressure profile. The reliability of those parameters is confirmed by a magnetic method measuring an excluded flux radius.

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