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== Physical mechanism == | == Physical mechanism == | ||
This transport bifurcation is | This transport bifurcation is due to the suppression of turbulence in the edge plasma. | ||
There is substantial evidence that the suppression of turbulence is the consequence of the formation of a sheared flow layer and an associated edge radial electric field. | There is substantial evidence that the suppression of turbulence is the consequence of the formation of a sheared flow layer and an associated edge radial electric field. | ||
The local suppression of turbulence leads to a reduction of transport and a steepening of the edge profiles. | The local suppression of turbulence leads to a reduction of transport and a steepening of the edge profiles. | ||