Enhanced con®nement discharges in DIII-D with neon and argon induced radiation
نویسندگان
چکیده
Enhanced energy con®nement in discharges with impurity induced radiating power fractions, Prad/Pin, from 50% to 100% have been observed in the DIII-D tokamak with neon and argon gas pung. These radiating mantle enhanced con®nement discharges have been obtained in the DIII-D tokamak under a variety of conditions: diverted and limited con®gurations with both an H-mode and L-mode edge. Con®nement enhancements as high as the ELM free H-mode scaling relation have been obtained with impurity gas pung, although operation at the highest densities is transient. Similarities and dierences between these DIII-D discharges and RI-mode discharges obtained in the TEXTOR tokamak are discussed. Ó 1999 Elsevier Science B.V. All rights reserved.
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