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.


Publié dans:
Physical Review Letters, 97, 235003
Année
2006
Publisher:
American Physical Society
ISSN:
0031-9007
Mots-clefs:
Autres identifiants:
Laboratoires:
SPC
CRPP




 Notice créée le 2009-03-26, modifiée le 2019-12-29


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