Stable ellipticity-induced Alfv{acute e}n eigenmodes in the Joint European Torus

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.872262· OSTI ID:542604

Heidbrink, W W ^[1]; Fasoli, A ^[2]; Borba, D ^[2]; Jaun, A ^[3]

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1. University of California, Irvine, California 92697-4575 (United States)
2. Joint European Torus Joint Undertaking, Abingdon, Oxfordshire (United Kingdom)
3. Alfven Laboratory, Royal Institute of Technology, Stockholm (Sweden)

An external antenna excites stable eigenmodes in elongated Ohmically heated plasmas in the Joint European Torus (JET) [P.-H. Rebut, R. J. Bickerton, and B. E. Keen, Nucl. Fusion {bold 25}, 1011 (1985)]. The frequency of the modes (240{minus}290 kHz) falls in the gap in the magnetohydrodynamic (MHD) continuum that is produced by ellipticity. Some modes are very weakly damped ({gamma}/{omega}{lt}10{sup {minus}3}). {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: General Atomics
• DOE Contract Number: AC03-89ER51114
• OSTI ID: 542604
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 10 Vol. 4; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
DAMPING
EIGENSTATES
ELECTRIC HEATING
JET TOKAMAK
MAGNETOHYDRODYNAMICS
PLASMA HEATING
PLASMA INSTABILITY