Self-organization of electrostatic turbulence in a cylindrical plasma.

Based on theory and computer simulations we show that electrostatic turbulence in a cylindrical plasma with magnetic shear and curvature self-organizes to form a macroscopic potential phi which depends only on the radial coordinate r given by phi (r)~ J sub o(pr)+C sub 1 r sup 2 +C sub 2 where C sub 1 and C sub 2 are functions of a constant p. A unique feature of the potential is the existence of a coaxial phi(r sub o)=0 surface at r sub o~ 0.7a, where a is the radius of the cylinder. This surface is found to be fairly rigid and is believed to inhibit the radial particle transports.