Transport barrier fluctuations governed by SOL turbulence spreading
Turbulence spreading, namely turbulent transport extending into a stable region is reported both for the flat density profiles in the far SOL and into a modeled H-mode barrier. It is shown that due to turbulence penetration, the pedestal width fluctuates and that its effective width is a factor 2 smaller than the linear predicted width. Turbulence overshooting throughout the pedestal leads to a non-vanishing turbulent transport within the barrier and provides a coupling of core and SOL turbulence despite the transport barrier.
Bibliographic Reference: An article published in: Journal of Nuclear Materials (2007), online edition
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Record Number: 200718981 / Last updated on: 2007-03-26
Original language: en
Available languages: en