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Abstract

A well diagnosed series of higher confinement (H) discharges in ASDEX is studied in detail by transport modelling. Computed temperature and density profiles in the ohmic and H phases are compared with measurements. Profiles for the electron heat diffusivity chi-e, diffusion coefficient D and inward drift velocity v-in are determined for the whole plasma including the scrape-off zone. Empirical scaling relations of these quantities in the L and H regimes are presented. The development of density and temperature profiles after transition to the H phase is investigated. The inward drift with neutral injection is studied.

Additional information

Authors: BECKER G, MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);ASDEX TEAM, MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY);NEUTRAL INJECTION TEAM MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY), MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, GARCHING BEI MUENCHEN (GERMANY)
Bibliographic Reference: WRITE TO MAX-PLANCK-INSTITUT FUER PLASMAPHYSIK, 8046 GARCHING BEI MUENCHEN (GERMANY), MENTIONING REPORT IPP III/98, 1984
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