NIFS-227

FULL TEXT (PDF, 778 KB)


Author(s):

T. Yamagishi,

Title:

Anomalous Cross Field Flux in CHS

Date of publication:

May 1993

Key words:

Radial electric field, cross field fluxes, curvature drift resonance continuum, transit resonance continuum, ion heat diffusivity, inward transport due to curvature drift, trapped electron curvature drift resonance, modified gyro-reduced Bohm coefficient, comparision of experimental results in CHS Heliotron

Abstract:

Anomalous quasi-linear fluxes induced by the curvature drift resonance and transit resonace are evaluated in a rotating helical plasma . The radial electric field makes the Doppler shift, but does not contribute to the anomalous fluxes. The curvature drift resonance induces the new curvature term in the quasilinear fluxes. The effect of helical magnetic field is through this curvature of magnetic field lines, and contributes to the inward transport. The ion heat diffusivity due to the curvature drift resonance is obtained in the form of modified gyco-Bohm coefficient, and is compared with experimentally observed one in CHS Heliotron.

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