Author： Melnikov A. Eliseev L. Grashin S. Gudozhnik A. Lysenko S. Mavrin V. Perfilov S. Vershkov V. Krupnik L. Chmyga A. Komarov A. Kozachok A. Hidalgo C. Alonso A. dePablos J. Pedrosa M.
Publisher： Springer Publishing Company
ISSN： 0011-4626
Source： Czechoslovak Journal of Physics, Vol.55, Iss.12, 2005-12, pp. : 1569-1578
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Abstract
Comparison of the plasma electric potential evolution in the T-10 tokamak and TJ-II stellarator was performed. The core potential was measured by the heavy-ion beam probing and the edge potential was measured by Langmuir probe. The intrinsic potentials in both devices are different in sign, positive in TJ-II low-density discharge and negative in T-10 higher-density discharges, but during ECRH they evolve similarly: the potential becomes more positive, and increase of ECRH power leads to stronger rise of core potential.
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