The electrostatic turbulence in the edge plasma of the RFX reversed field pinch experiment has been studied using Langmuir probes and a homodyne reflectometer.The radial particle flux driven by electrostatic fluctuations has been measured in the region where a double E×B velocity shear layer occurs.It is found that almost 100% of the particle flux at the edge is driven by electrostatic fluctuations.The naturally occurring E×B velocity shear has been shown to be close to that required by the Biglari-Diamond-Terry criterion for turbulence radial decorrelation.
Antoni, V., Cavazzana, R., Desideri, D., Martines, E., Serianni, G., Tramontin, L. (1998). Electrostatic turbulence and transport in the velocity shear layer of a reversed field pinch plasma. PHYSICAL REVIEW LETTERS, 80(19), 4185-4188 [10.1103/PhysRevLett.80.4185].
Electrostatic turbulence and transport in the velocity shear layer of a reversed field pinch plasma
Martines E;
1998
Abstract
The electrostatic turbulence in the edge plasma of the RFX reversed field pinch experiment has been studied using Langmuir probes and a homodyne reflectometer.The radial particle flux driven by electrostatic fluctuations has been measured in the region where a double E×B velocity shear layer occurs.It is found that almost 100% of the particle flux at the edge is driven by electrostatic fluctuations.The naturally occurring E×B velocity shear has been shown to be close to that required by the Biglari-Diamond-Terry criterion for turbulence radial decorrelation.
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