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Measurement of Reynolds Stress and Zonal Flows in a Tokamak Using Langmuir Probe Array
Author(s) -
Xu G. S.,
Wan B. N.
Publication year - 2006
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.200610031
Subject(s) - langmuir probe , tokamak , reynolds stress , shearing (physics) , physics , reynolds number , plasma , mechanics , magnetohydrodynamic drive , shear stress , turbulence , computational physics , magnetohydrodynamics , plasma diagnostics , nuclear physics , thermodynamics
The Reynolds stress and zonal flows have been measured with several novel Langmuir probe array on the HT‐7 tokamak since the year 2002. Based on the original idea of the Reynolds stress triple tips array, we designed the forked probe and its improved generation, the farmer fork probe. And in order to measure the radial shearing rate of zonal flows, we designed the pyramid probe in 2003. Besides, an insert‐able magnetic probe was elaborated to measure the Maxwell stress in 2003. This paper addresses the technique aspects regarding this new application. Since the zonal flows dynamics is now widely believed crucial to plasma confinement physics, this opened up an important application field of Langmuir probe. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)