New tokamak plasma regime with stationary temperature oscillations

G. Giruzzi; F. Imbeaux; J.L. Ségui; X. Garbet; G.T.A. Huysmans; J.F. Artaud; A. Bécoulet; G.T. Hoang; X. Litaudon; P. Maget; B. Saoutic

doi:10.1103/PhysRevLett.91.135001

New tokamak plasma regime with stationary temperature oscillations

G. Giruzzi, F. Imbeaux, J.L. Ségui, X. Garbet, G.T.A. Huysmans, J.F. Artaud, A. Bécoulet, G.T. Hoang, X. Litaudon, P. Maget, B. Saoutic

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

72 Citations (Scopus)

Abstract

During noninductively driven discharges in the Tore Supra tokamak, steady sinusoidal oscillations of the central electron temperature, lasting as long as 2min, have been observed for the first time. Having no helical structure, they cannot be ascribed to any known MHD instability. The most plausible explanation of this new phenomenon is that the plasma current density and the electron temperature evolve as a nonlinearly coupled predator-prey system. This interpretation is supported by the numerical solution of coupled resistive current diffusion and heat transport equations.

Original language	English
Pages (from-to)	135001
Journal	Physical Review Letters
Volume	91
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.91.135001
Publication status	Published - 1 Sept 2003
Externally published	Yes

Keywords

Transport properties
Tokamaks spherical tokamaks

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10.1103/PhysRevLett.91.135001

http://adsabs.harvard.edu/abs/2003PhRvL..91m5001G

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title = "New tokamak plasma regime with stationary temperature oscillations",

abstract = "During noninductively driven discharges in the Tore Supra tokamak, steady sinusoidal oscillations of the central electron temperature, lasting as long as 2min, have been observed for the first time. Having no helical structure, they cannot be ascribed to any known MHD instability. The most plausible explanation of this new phenomenon is that the plasma current density and the electron temperature evolve as a nonlinearly coupled predator-prey system. This interpretation is supported by the numerical solution of coupled resistive current diffusion and heat transport equations.",

keywords = "Transport properties, Tokamaks spherical tokamaks",

author = "G. Giruzzi and F. Imbeaux and J.L. S{\'e}gui and X. Garbet and G.T.A. Huysmans and J.F. Artaud and A. B{\'e}coulet and G.T. Hoang and X. Litaudon and P. Maget and B. Saoutic",

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doi = "10.1103/PhysRevLett.91.135001",

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T1 - New tokamak plasma regime with stationary temperature oscillations

AU - Giruzzi, G.

AU - Imbeaux, F.

AU - Ségui, J.L.

AU - Garbet, X.

AU - Huysmans, G.T.A.

AU - Artaud, J.F.

AU - Bécoulet, A.

AU - Hoang, G.T.

AU - Litaudon, X.

AU - Maget, P.

AU - Saoutic, B.

PY - 2003/9/1

Y1 - 2003/9/1

N2 - During noninductively driven discharges in the Tore Supra tokamak, steady sinusoidal oscillations of the central electron temperature, lasting as long as 2min, have been observed for the first time. Having no helical structure, they cannot be ascribed to any known MHD instability. The most plausible explanation of this new phenomenon is that the plasma current density and the electron temperature evolve as a nonlinearly coupled predator-prey system. This interpretation is supported by the numerical solution of coupled resistive current diffusion and heat transport equations.

AB - During noninductively driven discharges in the Tore Supra tokamak, steady sinusoidal oscillations of the central electron temperature, lasting as long as 2min, have been observed for the first time. Having no helical structure, they cannot be ascribed to any known MHD instability. The most plausible explanation of this new phenomenon is that the plasma current density and the electron temperature evolve as a nonlinearly coupled predator-prey system. This interpretation is supported by the numerical solution of coupled resistive current diffusion and heat transport equations.

KW - Transport properties

KW - Tokamaks spherical tokamaks

U2 - 10.1103/PhysRevLett.91.135001

DO - 10.1103/PhysRevLett.91.135001

M3 - Article

C2 - 14525311

SN - 0031-9007

VL - 91

SP - 135001

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

ER -

New tokamak plasma regime with stationary temperature oscillations

Abstract

Keywords

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