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Telecommunications and Radio Engineering
SJR: 0.202 SNIP: 0.2 CiteScore™: 0.23

ISSN Imprimir: 0040-2508
ISSN On-line: 1943-6009

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Telecommunications and Radio Engineering

DOI: 10.1615/TelecomRadEng.v54.i4.40
pages 26-39

Dynamo and Relaxation in the Reversed Field Pinch

P. Martin
University of Padova, Department of Physics and Istituto Nazionale Fisica della Materia-Padova Research Unit
A. Buffa
University of Padova, Department of Electrical Engineering and Istituto Nazionale Fisica della Materia -Padova Research Unit
P. Franz
University of Padova, Department of Electrical Engineering and Istituto Nazionale Fisica della Materia -Padova Research Unit
L. Marrelli
Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy, EC
A. Murari
Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy, EC
R. Pasqualotto
Consorzio RFX, Corso Stati Uniti 4, 35127 Padova, Italy, EC

RESUMO

One of the most distinguishing features of the Reverse Field Pinch (RFP) magnetic configuration for the confinement of thermonuclear plasmas is that the experimental equilibrium is a self-organizing quasi-minimum energy state which stays very close to the fully relaxed Taylor state [Taylor, 74]. Its dynamics around this state is governed by a magnetic field regeneration mechanism similar to some extent to the dynamo naturally occurring in other physical systems. This mechanism is driven by the non-linear interaction of global, low-m resistive magnetohydrodynamic (MHD) modes resonant inside the toroidal field reversal surface. Since the outcome of this non-linear process are coherent velocity and magnetic field fluctuations, which combine to produce the dynamo electric field, energy transport in the RFP core is driven by magnetic fluctuations.


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