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.
All Science Journal Classification (ASJC) codes
- Nuclear Energy and Engineering
- Condensed Matter Physics
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