Plasma-Resistivity-Induced Strong Damping of the Kinetic Resistive Wall Mode

Yuling He, Yueqiang Liu, Yue Liu, Guangzhou Hao, and Aike Wang
Phys. Rev. Lett. 113, 175001 – Published 24 October 2014

Abstract

An energy-principle-based dispersion relation is derived for the resistive wall mode, which incorporates both the drift kinetic resonance between the mode and energetic particles and the resistive layer physics. The equivalence between the energy-principle approach and the resistive layer matching approach is first demonstrated for the resistive plasma resistive wall mode. As a key new result, it is found that the resistive wall mode, coupled to the favorable average curvature stabilization inside the resistive layer (as well as the toroidal plasma flow), can be substantially more stable than that predicted by drift kinetic theory with fast ion stabilization, but with the ideal fluid assumption. Since the layer stabilization becomes stronger with decreasing plasma resistivity, this regime is favorable for reactor scale, high-temperature fusion devices.

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  • Received 10 July 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.175001

© 2014 American Physical Society

Authors & Affiliations

Yuling He1, Yueqiang Liu2, Yue Liu1,*, Guangzhou Hao3, and Aike Wang3

  • 1Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
  • 2Culham Centre for Fusion Energy, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
  • 3Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China

  • *liuyue@dlut.edu.cn

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Vol. 113, Iss. 17 — 24 October 2014

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