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Influence of Magnetic Field Ripple on the Intrinsic Rotation of Tokamak Plasmas
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.ORCID iD: 0000-0002-7142-7103
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2010 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 105, no 10, 105005- p.Article in journal (Refereed) Published
Abstract [en]

Using the unique capability of JET to monotonically change the amplitude of the magnetic field ripple, without modifying other relevant equilibrium conditions, the effect of the ripple on the angular rotation frequency of the plasma column was investigated under the conditions of no external momentum input. The ripple amplitude was varied from 0.08% to 1.5% in Ohmic and ion-cyclotron radio-frequency (ICRF) heated plasmas. In both cases the ripple causes counterrotation, indicating a strong torque due to nonambipolar transport of thermal ions and in the case of ICRF also fast ions.

Place, publisher, year, edition, pages
2010. Vol. 105, no 10, 105005- p.
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-46619DOI: 10.1103/PhysRevLett.105.105005ISI: 000281518800005Scopus ID: 2-s2.0-77956325110OAI: oai:DiVA.org:kth-46619DiVA: diva2:455386
Note

QC 20111109

Available from: 2011-11-09 Created: 2011-11-04 Last updated: 2017-12-08Bibliographically approved

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Johnson, Thomas

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