Resistive Interchange Modes in Reversed Field Pinches.

Abstract

A new regime is found in which the growth rate of the resistive interchange mode in cylindrical geometry is considerably smaller than previously believed. This stabilization is due to coupling to the external, tearing stable, region. Considering the crossover point from the conventional resistive interchange to the new regime as a critical beta, beta sub c, we find beta sub c about 7% for classical resistivity with T sub e = 10 eV, in agreement with recent numerical studies. However, beta sub c scales as T sub e to the -3/5th power, giving beta sub c about 1% for T sub e = 1 keV. Marginally stable pressure profiles for totally localized modes in the Bessel function model for a reversed field pinch are also computed, and show that the central pressure may be up to 400 times the pressure at the wall. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 24, 1981
Accession Number
ADA108129

Entities

People

  • John M. Finn
  • Wallace M. Manheimer

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Agreements
  • Aspect Ratio
  • Bessel Functions
  • Complex Variables
  • Compression
  • Coordinate Systems
  • Couplings
  • Curvature
  • Dispersion Relations
  • Equations
  • Fluid Flow
  • Geometry
  • Magnetic Fields
  • Military Research
  • Pressure Gradients
  • Reynolds Number
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Plasma Physics / Magnetohydrodynamics