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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Melnikov, A.V., Eliseev, L.G., Grashin, S.A. et al. Study of the plasma potential evolution during ECRH in the T-10 tokamak and TJ-II stellarator. Czech J Phys 55, 1569–1578 (2005). https://doi.org/10.1007/s10582-006-0042-5
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DOI: https://doi.org/10.1007/s10582-006-0042-5