Measurement of the resistive-wall-mode stability in a rotating plasma using active MHD spectroscopy

H. Reimerdes, M. S. Chu, A. M. Garofalo, G. L. Jackson, R. J. La Haye, G. A. Navratil, M. Okabayashi, J. T. Scoville, E. J. Strait

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Abstract

Active measurements of spectrum of the rotation stabilized resistive-wall mode (RWM) was carried out. The perturbed radial magnetic field at the wall which yields resonant field amplification (RFA) amplitude was defined. Maximum amplification was observed when the externally applied field rotates with a frequency of a fraction of the inverse wall time in the direction of the toroidal plasma rotation. The structure of the plasma response was found to be independent of the applied frequency and typical for an RWM.

Original languageEnglish
Article number135002
Pages (from-to)135002-1-135002-4
JournalPhysical review letters
Volume93
Issue number13
DOIs
Publication statusPublished - 2004 Sep 24

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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