Analysis of neutral particle recycling and pedestal fueling in a H-mode DIII-D discharge

Friis, Z. W.; Stacey, W. M.; Leonard, A. W.; Rensink, M. E.
February 2010
Physics of Plasmas;Feb2010, Vol. 17 Issue 2, p022507
Academic Journal
A detailed analysis of neutral atom recycling and pedestal fueling in a DIII-D [J. Luxon, Nucl. Fusion 42, 614 (2002)] high-confinement mode discharge is presented. Experimental data and two-dimensional (2D) edge plasma fluid code calculations are employed to provide ion wall recycling and recombination neutral sources and background edge plasma parameters for a 2D edge neutral code calculation of detailed neutral density, ionization, and charge-exchange distributions throughout the edge pedestal, scrape-off layer and surrounding halo region, divertor, and private flux regions. The effectiveness of the different neutral sources for fueling the confined plasma is evaluated.


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