Properties of the edge plasma in the rebuilt extrap-T2R reversed field pinch experiment

N. Vianello, M. Spolaore, G. Serianni, H. Bergsåker, V. Antoni, J.R. Drake

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Abstract

The edge region of the rebuilt Extrap-T2R reversed field pinch experiment has been investigated using Langmuir probes. Radial profiles of main plasma parameters are obtained and compared with those of the previous device Extrap-T2. The spontaneous setting up of a double shear layer of E × B toroidal velocity is confirmed. The particle flux induced by electrostatic fluctuations is calculated and the resulting effective diffusion coefficient is consistent with the Bohm estimate. A close relationship between electrostatic fluctuations at the edge and non-linear coupling of MHD modes in the core is found.
Original languageEnglish
Pages (from-to)2513 - 2523
Number of pages11
JournalPlasma Physics and Controlled Fusion
Volume44
Issue number12
DOIs
Publication statusPublished - Dec 2002
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Vianello, N., Spolaore, M., Serianni, G., Bergsåker, H., Antoni, V., & Drake, J. R. (2002). Properties of the edge plasma in the rebuilt extrap-T2R reversed field pinch experiment. Plasma Physics and Controlled Fusion, 44(12), 2513 - 2523. https://doi.org/10.1088/0741-3335/44/12/302