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Author Takahashi, H. ♦ Ignat, D. W. ♦ Bernabei, S.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION ♦ LOWER HYBRID CURRENT DRIVE ♦ PLASMA SIMULATION ♦ REFRACTIVE INDEX ♦ TOKAMAK DEVICES ♦ INHOMOGENEOUS PLASMA ♦ PLASMA WAVES ♦ CURRENT DENSITY ♦ RAY TRACING
Abstract Ray tracing is performed in a {open_quote}straight tokamak{close_quote} geometry in the presence of a axially inhomogeneous density profile to emulate tokamaks that lack toroidal symmetry (due, e.g., to density fluctuations). It is found that the toroidal mode number conservation is violated only to an extent comparable to the toroidal density homogeneity. The {ital n}{sub {parallel}} upshifting accordingly occurs even in the absence of symmetry in substantially the same manner as in the presence of symmetry. But the upper bound to upshifting that exists in the presence of symmetry under some conditions also exists in the absence of symmetry, and prevents bridging of large spectral gaps and wave damping. {copyright} {ital 1996 American Institute of Physics.}
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-02-01
Publisher Department Princeton Plasma Physics Laboratory
Publisher Place United States
Volume Number 355
Issue Number 1
Technical Publication No. CONF-9505105-
Organization Princeton Plasma Physics Laboratory


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