Turbulent transport in the Madison Symmetric Torus reversed‐field pinch
| Autor: | C. W. Spragins, A. F. Almagri, Stewart C. Prager, S. Assadi, Julien Clinton Sprott, W. Shen, E. J. Zita, K. L. Sidikman, Samuel Hokin, D.J. Den Hartog, J. S. Sarff, T. D. Rempel, M. R. Stoneking |
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| Rok vydání: | 1992 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics Reversed field pinch Condensed matter physics Ambipolar diffusion Turbulence Computational Mechanics General Physics and Astronomy Condensed Matter Physics Madison Symmetric Torus Instability Magnetic field Physics::Plasma Physics Mechanics of Materials Pinch Particle Atomic physics |
| Zdroj: | Physics of Fluids B: Plasma Physics. 4:2136-2141 |
| ISSN: | 0899-8221 |
| DOI: | 10.1063/1.860020 |
| Popis: | 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 (〈J∥ Br〉/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 〈PEφ 〉/B0) due to electrostatic fluctuations is relatively small, and parallel current transport (from 〈J∥ Eφ〉/B0) may be small as well. |
| Databáze: | OpenAIRE |
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