On Properties of Compressional Alfven Eigenmode Instability Driven by Superalfvinic Ions [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy, 2002.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- 331 KILOBYTES pages : digital, PDF file
- Additional Creators
- United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
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- Free-to-read Unrestricted online access
- Summary
- Properties of the instability of Compressional Alfven Eigenmodes (CAE) in tokamak plasmas are studied in the cold plasma approximation with an emphasis on the instability driven by the energetic minority Ion Cyclotron Resonance Heating (ICRH) ions. We apply earlier developed theory [N.N. Gorelenkov and C.Z. Cheng, Nuclear Fusion 35 (1995) 1743] to compare two cases: Ion Cyclotron Emission (ICE) driven by charged fusion products and ICRH Minority driven ICE (MICE) [J. Cottrell, Phys. Rev. Lett. (2000)] recently observed on JET [Joint European Torus]. Particularly in MICE spectrum, only instabilities with even harmonics of deuterium-cyclotron frequency at the low-field-side plasma edge were reported. Odd deuterium-cyclotron frequency harmonics of ICE spectrum between the cyclotron harmonics of protons can be driven only via the Doppler-shifted cyclotron wave-particle resonance of CAEs with fusion products, but are shown to be damped due to the electron Landau damping in experiments on MI CE. Excitation of odd harmonics of MICE with high-field-side heating is predicted. Dependencies of the instability on the electron temperature is studied and is shown to be strong. Low electron temperature is required to excite odd harmonics in MICE.
- Report Numbers
- E 1.99:pppl-3667.pdf
pppl-3667.pdf - Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
02/06/2002.
"pppl-3667.pdf"
C.Z. Cheng; N.N. Gorelenkov.
Princeton Plasma Physics Lab., NJ (US) - Type of Report and Period Covered Note
- Topical;
- Funding Information
- AC02-76CH03073
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