NIFS-722

FULL TEXT (PDF, 368 KB)

Author(s):

S. Toda and K. Itoh

Title:

Phase Diagram of Structure of Radial Electric Field in Helical Plasmas

Date of publication:

Jan. 2002

Key words:

radial electric field, neoclassical transport, anomalous transport, phase diagram, transition property

Abstract:

A set of transport equations in toroidal helical plasmas is analyzed, including the bifurcation of the radial electric field. Multiple solutions of E_r for the ambipolar condition induces domains of different electric polarities. A structure of the domain interface is analyzed and a phase diagram is obtained in the space of the external control parameters. The region of the reduction of the anomalous transport is identified.

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