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Abstract

Many experiments in plasma physics require the analysis of spatio-temporal signals. Standard techniques such as the Fourier transform do not readily apply and a different approach, based on the biorthogonal decomposition, is presented, which splits the signal into orthogonal spatial and temporal modes. Signals with apparently complex structures can be decomposed into a few coherent modes, which are often associated with different physical mechanisms. The method is applied to macroscopic plasma fluctuations as observed on the Tore Supra tokamak, using soft X-ray and magnetic measurements.

Additional information

Authors: DUDOK DE WIT T, CNRS Luminy, Centre de Physique Théorique, Marseille (FR);PECQUET A L, CNRS Luminy, Centre de Physique Théorique, Marseille (FR);VALLET J C, CNRS Luminy, Centre de Physique Théorique, Marseille (FR);LIMA R, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Report: EUR-CEA-FC-1499 EN (1993) 48 pp.
Availability: Available from CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Record Number: 199311387 / Last updated on: 1994-11-28
Category: PUBLICATION
Original language: en
Available languages: en
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