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research article
Stabilization of ion-temperature-gradient-driven tokamak modes by magnetic-field gradient reversal
Global gyrokinetic particle simulations have been used to search tokamak configurations which are stable again st the ion-temperature-gradient - driven (ITG) modes commonly held responsible for the core anomalous ion heat transport. The stable configurations are-characterized by strongly reduced or reversed del B drifts on the low-field side. Since excellent transport properties have been observed in high beta p (poloidal beta) tokamak experiments, we conjecture, as a result of our simulations, that this may be due to the stabilization of ITG modes by the reduction of the del B drifts.
Type
research article
Web of Science ID
WOS:A1997WX51800013
Authors
Publication date
1997
Published in
Volume
78
Issue
18
Start page
3471
End page
3474
Peer reviewed
REVIEWED
Available on Infoscience
April 16, 2008
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