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Transport of parallel momentum induced by current-symmetry breaking in toroidal plasmas
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Camenen, Y., Peeters, A. G., Angioni, C., Casson, F. J. (Francis James), Hornsby, W. A., Snodin, A. P. and Strintzi, D. (2009) Transport of parallel momentum induced by current-symmetry breaking in toroidal plasmas. Physical Review Letters, Vol.102 (No.12). Article no. 125001. doi:10.1103/PhysRevLett.102.125001 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.102.125001
Abstract
The symmetry of a physical system strongly impacts on its properties. In toroidal plasmas, the symmetry along a magnetic field line usually constrains the radial flux of parallel momentum to zero in the absence of background flows. By breaking the up-down symmetry of the toroidal currents, this constraint can be relaxed. The parallel asymmetry in the magnetic configuration then leads to an incomplete cancellation of the turbulent momentum flux across a flux surface. The magnitude of the subsequent toroidal rotation increases with the up-down asymmetry and its sign depends on the direction of the toroidal magnetic field and plasma current. Such a mechanism offers new insights in the interpretation and control of the intrinsic toroidal rotation in present day experiments.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physical Review Letters | ||||
Publisher: | American Physical Society | ||||
ISSN: | 0031-9007 | ||||
Official Date: | 27 March 2009 | ||||
Dates: |
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Volume: | Vol.102 | ||||
Number: | No.12 | ||||
Number of Pages: | 4 | ||||
Page Range: | Article no. 125001 | ||||
DOI: | 10.1103/PhysRevLett.102.125001 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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