(Georgia Institute of Technology, 2012)
Stacey, Weston M.; Groebner, Rich J.; Evans, T. E.
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.
(Georgia Institute of Technology, 2006-11-17)
Stacey, Weston M.; Evans, T. E.
Thermal diffusivities are inferred in the plasma edge of a matched pair of DIII-D [J. Luxon, Nucl. Fusion 42, 614 (2002)] high confinement mode discharges, one with edge localized modes (ELMs) present and the other with ELMs suppressed by resonant magnetic perturbations. These experimentally inferred thermal diffusivity profiles are compared with the predictions of a variety of thermal transport theories.