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

doi:10.1103/PhysRevLett.93.135002

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

Institute of Space and Plasma Sciences

Research output: Contribution to journal › Article › peer-review

103 Citations (Scopus)

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 language	English
Article number	135002
Pages (from-to)	135002-1-135002-4
Journal	Physical review letters
Volume	93
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.93.135002
Publication status	Published - 2004 Sept 24

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.93.135002

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

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.",

author = "H. Reimerdes and Chu, {M. S.} and Garofalo, {A. M.} and Jackson, {G. L.} and {La Haye}, {R. J.} and Navratil, {G. A.} and M. Okabayashi and Scoville, {J. T.} and Strait, {E. J.}",

note = "Funding Information: This work was supported by U.S. Department of Energy under Contracts No. DE-FG03-89ER53297, No. DE-AC03-99ER54463, and No. DE-AC02-76CH03073.",

year = "2004",

month = sep,

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doi = "10.1103/PhysRevLett.93.135002",

language = "English",

volume = "93",

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T1 - Measurement of the resistive-wall-mode stability in a rotating plasma using active MHD spectroscopy

AU - Reimerdes, H.

AU - Chu, M. S.

AU - Garofalo, A. M.

AU - Jackson, G. L.

AU - La Haye, R. J.

AU - Navratil, G. A.

AU - Okabayashi, M.

AU - Scoville, J. T.

AU - Strait, E. J.

N1 - Funding Information: This work was supported by U.S. Department of Energy under Contracts No. DE-FG03-89ER53297, No. DE-AC03-99ER54463, and No. DE-AC02-76CH03073.

PY - 2004/9/24

Y1 - 2004/9/24

N2 - 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.

AB - 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.

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

Abstract

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