the role of the plasma current in turbulence decrease with lower hybrid waves

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ID: 181251
2017
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Abstract
We study the effect of lower hybrid waves on edge turbulence using a set of two Langmuir probes inserted in the scrape-off layer of the Tore Supra tokamak. We use the cross-correlation coefficient to assess the interplay between turbulence and the LH waves. We found that turbulence is affected at high plasma current even at relatively low LH powers. When the plasma current is below 1 MA, this effect disappears. Finally, we show that the level of fluctuations and the cross-correlation amplitude are correlated whereas the increase of the first leads to the increase of the second. The role of the plasma current could reflect that the exchange of the RF waves with edge turbulence is occurring in the closed field lines rather in the open field lines range.
Reference Key
ghassan2017epjthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Antar Ghassan;Goniche Marc;Ekedahl Annika
Journal utilitas mathematica
Year 2017
DOI
10.1051/epjconf/201715703002
URL
https://doi.org/10.1051/epjconf/201715703002
Keywords
physics

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