Internal Transport Barrier: Difference between revisions

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The general consensus is that ITBs are the consequence of turbulence suppression due to sheared (''E'' × ''B'') flows.
The general consensus is that ITBs are the consequence of turbulence suppression due to sheared (''E'' × ''B'') flows.
<ref>[http://link.aip.org/link/?PHPAEN/4/1499/1 K.H. Burrell, ''Effects of E × B velocity shear and magnetic shear on turbulence and transport in magnetic confinement devices'', Phys. Plasmas '''4''' (1997) 1499]</ref>
<ref>[http://link.aip.org/link/?PHPAEN/4/1499/1 K.H. Burrell, ''Effects of E × B velocity shear and magnetic shear on turbulence and transport in magnetic confinement devices'', Phys. Plasmas '''4''' (1997) 1499]</ref>
This mechanism is evidently related to the mechanism for the formation of the [[H-mode]] barrier.
Such sheared flows can be generated by the turbulence itself via the [[Reynolds stress]] mechanism.
This process is related to the formation of the [[H-mode]] barrier.


ITBs are often found to be associated with rational magnetic surfaces.
ITBs are often found to be associated with rational magnetic surfaces.