127 0

Perpendicular momentum injection by lower hybrid wave in a tokamak

Title
Perpendicular momentum injection by lower hybrid wave in a tokamak
Author
이정표
Keywords
CURRENT DRIVE; FREQUENCY WAVES; FLOW DRIVE; TRANSPORT; PLASMAS; FORCES; GENERATION; DIFFUSION
Issue Date
2012-11
Publisher
INSTITUTE OF PHYSICS PUBLISHING
Citation
Plasma Physics and Controlled Fusion, 2012, 54(12), P.125005
Abstract
The injection of lower hybrid (LH) waves for current drive into a tokamak affects the profile of intrinsic rotation. In this paper, the momentum deposition by the LH wave on the electrons is studied. Due to the increase in the poloidal momentum of the wave as it propagates into the tokamak, the parallel momentum of the wave increases considerably. The change in the perpendicular momentum of the wave is such that the toroidal angular momentum of the wave is conserved. If the perpendicular momentum transfer via electron Landau damping is ignored, the transfer of the toroidal angular momentum to the plasma will be larger than the injected toroidal angular momentum. A proper quasilinear treatment proves that both perpendicular and parallel momentum are transferred to the electrons. The toroidal angular momentum of the electrons is then transferred to the ions via different mechanisms for the parallel and perpendicular momentum. The perpendicular momentum is transferred to ions through an outward radial electron pinch, while the parallel momentum is transferred through collisions.
URI
http://iopscience.iop.org/article/10.1088/0741-3335/54/12/125005/metahttp://hdl.handle.net/20.500.11754/47040
ISSN
0741-3335
DOI
10.1088/0741-3335/54/12/125005
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE