Single helicity: a new paradigm for the reversed field pinch (Articolo in rivista)

Type
Label
  • Single helicity: a new paradigm for the reversed field pinch (Articolo in rivista) (literal)
Anno
  • 2000-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0741-3335/42/12B/319 (literal)
Alternative label
  • Escande D.F.; Cappello S.; D'Angelo F.; Martin P.; Ortolani S.; Paccagnella R. (2000)
    Single helicity: a new paradigm for the reversed field pinch
    in Plasma physics and controlled fusion (Print); IOP PUBLISHING LTD, BRISTOL BS1 6BE (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Escande D.F.; Cappello S.; D'Angelo F.; Martin P.; Ortolani S.; Paccagnella R. (literal)
Pagina inizio
  • B243 (literal)
Pagina fine
  • B253 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • 27th European-Physical-Society Conference on Controlled Fusion and Plasma Physics, BUDAPEST, HUNGARY, JUN 12-16, 2000; / Supplement December 2000 / E-ISSN: 1361-6587 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0741-3335/42/12B/319/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 42 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 11 (literal)
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  • 12B (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 : UMR 6633 CNRS-Université de Provence, Faculté de St Jérôme, case 321, Avenue Normandie Niemen, F-13397 Marseille Cedex 20, France; / 2,5,6 : Istituto Gas Ionizzati del CNR, Padova, Italy; / 1-6 : Consorzio RFX, Corso Stati Uniti 4, I-35127 Padova, Italy. (literal)
Titolo
  • Single helicity: a new paradigm for the reversed field pinch (literal)
Abstract
  • The reversed held pinch (RFP) is a configuration for magnetic confinement akin to the tokamak, but its toroidal field has an amplitude comparable to the poloidal one, and reverses in the outer region. Recent progress in experiments and theory open a path beyond the standard paradigm that a bath of magnetic turbulence is intrinsic to the RFP. In RFX, the largest present RFP experiment, the existence of plasma states with a hot helical core has been proven by soft x-ray tomography. Such states have been seen transiently in several RFPs, but also permanently in discharges in RFX. This last fact makes these states germane to the stationary single-helicity (SH) states displayed by three-dimensional visco-resistive MHD simulations. These simulations also display multiple-helicity (MW) states whose features, in particular magnetic chaos, are analogous to the traditional turbulent state of RFP plasmas. The numerical MH states bifurcate to SH ones when the product (viscosity x resistivity) is increased. The SH states correspond to an integrable magnetic field with good flux surfaces, a feature favourable to good confinement. SH states are not Taylor states, but they may be viewed as the nonlinear state of a resistive kink mode stabilized by the toroidal field reversal. (literal)
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