Turbulent transport in the Madison Symmetric Torus reversed-field pinch

T. D. Rempel, A. F. Almagri, S. Assadi, D. J. Den Hartog, S. A. Hokin, S. C. Prager, J. S. Sarff, W. Shen, K. L. Sidikman, C. W. Spragins, J. C. Sprott, M. R. Stoneking, E. J. Zita

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Measurements of edge turbulence and the associated transport are ongoing in the Madison Symmetric Torus (MST) reversed-field pinch [Fusion Technol. 19, 131 (1991)] using magnetic and electrostatic probes. Magnetic fluctuations are dominated by m=1 and n ∼2R/a, tearing modes. Particle losses induced by magnetic field fluctuations have been found to be ambipolar (〈J̃ r〉/B0=0). Electrostatic fluctuations are broadband and turbulent, with mode widths Δm ∼ 3-7 and Δn ∼ 70-150. Particle, parallel current, and energy transport arising from coherent motion with the fluctuating Ẽ×B drift have been measured. Particle transport via this channel is comparable to the total particle loss from MST. Energy transport (from 〈P̃Ẽ φ〉/B0) due to electrostatic fluctuations is relatively small, and parallel current transport (from 〈Jφ〉/B0) may be small as well.

Original languageEnglish (US)
Pages (from-to)2136-2141
Number of pages6
JournalPhysics of Fluids B
Issue number7
StatePublished - 1992

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • General Physics and Astronomy
  • Fluid Flow and Transfer Processes


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