Evolution of Edge Pedestal Profiles Between ELMs

The measured edge profile evolution in DIII-D discharges is analyzed in terms of the implied thermal diffusivities, ion diffusion coefficients and pinch velocities, using the momentum-balance methodology of Ref. [1], extended to take into account ion orbit loss and X-point loss. The evolution of the density, temperature, rotation and radial electric field profiles in the edge pedestal between edge localized modes (ELMs) provides information of these diffusive and non-diffusive transport processes in the pedestal of H-mode plasmas. This methodology is incorporated in the GTEDGE code developed for \hbox{DIII-D} data interpretation. Using a smaller integration time for the charge exchange recombination measurements than in Ref.~[1] allows a more detailed examination of the time evolution of the ion temperature and rotation profiles.\par \vskip6pt \noindent [1] W.M.\ Stacey and R.J.\ Groebner, Nucl.\ Fusion {\bf 51}, 063024 (2011).