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Empirical mode decomposition method for investigating the structure of large-scale MHD instabilities in a tokamak

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Abstract

A new approach to the processing of experimental data from MHD diagnostics is developed for the purpose of investigating the spatial structure of large-scale MHD instabilities in a tokamak. The empirical mode decomposition method is applied to expand a multimode MHD perturbation in individual modes, which are then identified by constructing a spatial analytic signal with the help of the Hilbert transform. The method can be used to analyze the structure of the tearing instability and of the resistive wall modes.

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Authors and Affiliations

  1. Russian Research Centre Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182, Russia

    A. M. Kakurin & I. I. Orlovsky

Authors
  1. A. M. Kakurin
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  2. I. I. Orlovsky
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__________

Translated from Fizika Plazmy, Vol. 30, No. 5, 2004, pp. 406–411.

Original Russian Text Copyright © 2004 by Kakurin, Orlovsky.

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Kakurin, A.M., Orlovsky, I.I. Empirical mode decomposition method for investigating the structure of large-scale MHD instabilities in a tokamak. Plasma Phys. Rep. 30, 370–375 (2004). https://doi.org/10.1134/1.1744946

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  • DOI: https://doi.org/10.1134/1.1744946

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