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Abstract

Recently, there has been increased interest in the ratio ns/nc, where ns and nc are the separatrix and pedestal densities, respectively. A semi-empirical model for this ratio is proposed which puts particular emphasis on the role of edge physics. The empirical elements of the model and the detailed comparison with data rely on the extensive edge density database is established at ASDEX Upgrade. The derived scaling can be cast into a form where ns/nc is essentially determined by the proximity to the Greewald limit

Additional information

Authors: MAX-PLANCK-INSTITUT FUR PLASMAPHYSIK, ;GARCHING BEI MUNCHEN (DE),
Bibliographic Reference: Article: Nuclear Fusion, 39 (1999) 7, 843-847
Record Number: 199911214 / Last updated on: 1999-08-27
Original language: en
Available languages: en