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Rotation Driven by Rectified RF-sheath Potentials and Spatial Dispersion
KTH, School of Electrical Engineering (EES), Fusion Plasma Physics.
2009 (English)In: RADIO FREQUENCY POWER IN PLASMAS, 2009, Vol. 1187, 625-628 p.Conference paper (Refereed)
Abstract [en]

Plasma rotation is of interest for improving confinement and stabilising plasma. Effects from fast particles with broad orbits can only partly explain the changes in the rotation profiles during ICRH. The effect on wave-particle interaction of a finite poloidal mode number is discussed and two new RF-mechanisms are proposed: Co-current torque caused by sputtering by rectified RF-sheath potentials and transport of momentum due to spatial dispersion. The latter effect affects the RF-current drive, in particular, in conjunction with mode conversion.

Place, publisher, year, edition, pages
2009. Vol. 1187, 625-628 p.
, AIP Conference Proceedings
Keyword [en]
RF-heating, Rectified RF-sheath potentials, Plasma rotation, Current drive
URN: urn:nbn:se:kth:diva-25567ISI: 000276069400131ScopusID: 2-s2.0-73449134522ISBN: 978-0-7354-0753-4OAI: diva2:370969
18th Topical Conference on Radio Frequence Power in Plasmas Ghent, BELGIUM, JUN 24-26, 2009
QC 20101118Available from: 2010-11-18 Created: 2010-10-27 Last updated: 2010-11-18Bibliographically approved

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Hellsten, Torbjörn
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