Turbulence simulations of transport barrier relaxations in tokamak edge plasmas (original) (raw)

Plasma Physics and Controlled Fusion, 2007

Abstract

A promising operational regime of future fusion reactors is characterized by an edge transport barrier, i.e. a localized steepening of density and temperature gradients. Typically, such a barrier is unstable and relaxes quasi-periodically. In this work, we show that complete barrier relaxation cycles can be reproduced by three-dimensional turbulence simulations. In these simulations, a barrier forms due to an imposed

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