Ideal saturated MHD helical structures in axisymmetric hybrid plasmas (Articolo in rivista)

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  • Ideal saturated MHD helical structures in axisymmetric hybrid plasmas (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0029-5515/54/6/064017 (literal)
Alternative label
  • Brunetti D.; Graves J. P.; Cooper W. A.; Terranova D. (2014)
    Ideal saturated MHD helical structures in axisymmetric hybrid plasmas
    in Nuclear fusion; IOP PUBLISHING LTD, BRISTOL BS1 6BE (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Brunetti D.; Graves J. P.; Cooper W. A.; Terranova D. (literal)
Pagina inizio
  • 064017 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Article Number: 064017; Nuclear fusion (Online) - Attiva dal: 1992 - Editore: Institute of Physics Publishing - Bristol - Paese di pubblicazione: Regno Unito - Lingua: inglese - eIssn: 1741-4326 - Titolo chiave: Nuclear fusion (Online) - Titolo proprio: Nuclear fusion. (Online) - Titolo abbreviato: Nucl. fus. (Online) - (literal)
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  • http://iopscience.iop.org/0029-5515/54/6/064017/ (literal)
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  • 54 (literal)
Rivista
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  • 9 (literal)
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  • 6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1,2,3 : Centre de Recherches en Physique Des Plasmas, Association EURATOM-Confederation Suisse, EPFL, 1015 Lausanne, Switzerland; 4 : Consorzio RFX, EURATOM-ENEA Association, Corso Stati Uniti 4, 35127 Padova, Italy. (literal)
Titolo
  • Ideal saturated MHD helical structures in axisymmetric hybrid plasmas (literal)
Abstract
  • Kinked saturated m = 1 helical structures are frequently observed in tokamak hybrid plasmas and in reversed field pinches (RFP). These modes occur when an extremum in the safety factor is close to, but necessarily resonant with, a low order rational (typically q(min) approximate to 1/1 in tokamaks, and q(max) approximate to 1/7 in RFPs). If the exact resonance can be avoided, the essential character of these modes can be modelled assuming ideal nested magnetic flux surfaces. The methods used to characterize these structures include linear and nonlinear ideal magnetohydrodynamic stability calculations, which evaluate the departure from an axisymmetric plasma state, or equilibrium calculations using a 3D equilibrium code. The extent to which these approaches agree in tokamaks and reverse field pinches is investigated, and compared favourably for the first time with an analytic nonlinear treatment that is valid for arbitrary toroidal mode number. (literal)
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