Interplay between edge magnetic topology, pressure profile and blobs in the edge of RFX-mod (Articolo in rivista)

Type
Label
  • Interplay between edge magnetic topology, pressure profile and blobs in the edge of RFX-mod (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0741-3335/54/6/065003 (literal)
Alternative label
  • M. Agostini; A. Scaggion; P. Scarin; G. Spizzo; N. Vianello (2012)
    Interplay between edge magnetic topology, pressure profile and blobs in the edge of RFX-mod
    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
  • M. Agostini; A. Scaggion; P. Scarin; G. Spizzo; N. Vianello (literal)
Pagina inizio
  • 065003 (literal)
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  • Article Number: 065003 Online at stacks.iop.org/PPCF/54/065003 La rivista è pubblicata anche online con ISSN 1361-6587 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0741-3335/54/6/065003/pdf/0741-3335_54_6_065003.pdf (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 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
  • Consorzio RFX, Associazione EURATOM-Enea sulla fusione, C.so Stati Uniti 4, I-35127, Padova Italy (literal)
Titolo
  • Interplay between edge magnetic topology, pressure profile and blobs in the edge of RFX-mod (literal)
Abstract
  • The observation of the periodic pressure profile time oscillations in the edge region (0.93 < r/a < 1) of a RFX-mod device allows one to investigate the role of pressure as a turbulence regulation mechanism. The proportionality between the radial correlation length of edge fluctuations and the radial characteristic pressure length L-p suggests a sort of regulation of the turbulent spatial scale, where L-p sets the radial dimension of the blobs. Moreover, the spatial scale regulation is confirmed by observing a linear scaling between the energy injection scale and the toroidal dimension of the edge coherent structures. On the other hand, the link between Delta P-e and turbulence level does not hold locally: the edge fluctuation level is higher in the toroidal region of lower edge pressure gradient. Hence if coherent structures are generated locally in the region of strongest Delta P-e, they flow and accumulate where Delta P-e is lower. (literal)
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