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research article
Observation of Spontaneous Toroidal Rotation Inversion in Ohmically Heated Tokamak Plasmas
Bulk plasma toroidal rotation is observed to invert spontaneously from counter to cocurrent direction in TCV (Tokamak à Configuration Variable) Ohmically heated discharges, in low confinement mode, without momentum input. The inversion occurs in high current discharges, when the plasma electron density exceeds a well-defined threshold. The transition between the two rotational regimes has been studied by means of density ramps. The results provide evidence of a change of the balance of nondiffusive momentum fluxes in the core of a plasma without an external drive.
Type
research article
Web of Science ID
WOS:000242708900030
Authors
Publication date
2006
Publisher
Published in
Volume
97
Article Number
235003
Peer reviewed
REVIEWED
Available on Infoscience
March 26, 2009
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