New High-Confinement Regime with Fast Ions in the Core of Fusion Plasmas.

  title={New High-Confinement Regime with Fast Ions in the Core of Fusion Plasmas.},
  author={Alessandro Di Siena and Roberto Bilato and Tobias G{\"o}rler and Alejandro Ba{\~n}on Navarro and Emanuele Poli and V. Bobkov and Denis Jarema and Emiliano Fable and Clemente Angioni and Yevgen Kazakov and R. Ochoukov and P. A. Schneider and Markus Weiland and Frank Jenko and the ASDEX Upgrade team},
  journal={Physical review letters},
  volume={127 2},
The key result of the present work is the theoretical prediction and observation of the formation of a new type of transport barrier in fusion plasmas, called F-ATB (fast ion-induced anomalous transport barrier). As demonstrated through state-of-the-art global electrostatic and electromagnetic simulations, the F-ATB is characterized by a full suppression of the turbulent transport-caused by strongly sheared, axisymmetric E×B flows-and an increase of the neoclassical counterpart, albeit keeping… Expand
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Plasma Physics and Controlled Fusion 41
  • B367
  • 1999
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  • press
  • 2020
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  • 879
  • 2020
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  • 2007
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  • 2004
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  • 2000
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