Title:
Non-Diffusive Transport in the Tokamak Edge Pedestal
Non-Diffusive Transport in the Tokamak Edge Pedestal
Author(s)
Stacey, Weston M.
Groebner, Rich J.
Evans, T. E.
Groebner, Rich J.
Evans, T. E.
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Abstract
There are (at least) two classical mechanisms for non-diffusive transport in the edge plasma: i) particle “pinch” velocities due to forces such as VxB, and Er; and ii) outward drifts due to ion-orbit loss and X-transport. A theoretical development for the treatment of these non-diffusive transport mechanisms within the context of fluid theory is assembled and applied to several DIII-D discharges in order to investigate the importance of these non-diffusive transport mechanisms in the edge pedestal. Several interesting insights emerge from this investigation.
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Date Issued
2012
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Text
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Pre-print