Effect of Trapped Energetic Particles on the Resistive Wall Mode

Journal Article · Fri Jul 01 00:00:00 EDT 2011 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.107.015001· OSTI ID:21567500

Hao, G Z; Wang, A K; Qiu, X M ^[1]; Liu, Y Q ^[2]

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1. Southwestern Institute of Physics, Post Office Box 432, Chengdu 610041 (China)
2. Euratom/CCFE Fusion Association, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom)

A stability analysis for the resistive wall mode is studied in the presence of trapped energetic particles (EPs). When the EPs' beta exceeds a critical value, a fishbonelike bursting mode (FLM) with an external kink eigenstructure can exist. This offers the first analytic interpretation of the experimental observations [Phys. Rev. Lett. 103, 045001 (2009)]. The mode-particle resonances for the FLM and the q=1 fishbone occur in different regimes of the precession frequency of EPs. In certain ranges of the plasma rotation speed and the EPs' beta, a mode conversion can occur between the resistive wall mode and FLM.

• OSTI ID: 21567500
• Journal Information: Physical Review Letters, Vol. 107, Issue 1; Other Information: DOI: 10.1103/PhysRevLett.107.015001; (c) 2011 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
MODE CONVERSION
PLASMA
RESONANCE
ROTATION
STABILITY
TRAPPING
VELOCITY
MOTION