Impurity effects on the ion temperature gradient mode in reversed-field pinch plasmas (Articolo in rivista)

Type
Label
  • Impurity effects on the ion temperature gradient mode in reversed-field pinch plasmas (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0029-5515/51/8/083021 (literal)
Alternative label
  • S.F. Liu; S.C. Guo; C.L. Zhang; J.Q. Dong; L. Carraro; Z.R.Wang (2011)
    Impurity effects on the ion temperature gradient mode in reversed-field pinch plasmas
    in Nuclear fusion; International Atomic Energy Agency, Vienna (Austria)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S.F. Liu; S.C. Guo; C.L. Zhang; J.Q. Dong; L. Carraro; Z.R.Wang (literal)
Pagina inizio
  • 083021 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Article Number: 083021 La rivista è pubblicata anche online con ISSN 1741-4326 (literal)
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  • http://iopscience.iop.org/0029-5515/51/8/083021/ (literal)
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  • 51 (literal)
Rivista
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  • Issue 8, Article Number: 083021 (9 pp) (literal)
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  • 9 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 School of Physics, Nankai University, Tianjin 300071, People's Republic of China; - 2 Consorzio RFX, Associazione Euratom-ENEA sulla fusione, Corso Stati Uniti 4, Padova 35127, Italy; - 3 Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, People's Republic of China; - 4 Southwestern Institute of Physics, Chengdu 610041, People's Republic of China. - (S.F. Liu1, S.C. Guo2, C.L. Zhang1, J.Q. Dong3,4, L. Carraro2 and Z.R.Wang2) (literal)
Titolo
  • Impurity effects on the ion temperature gradient mode in reversed-field pinch plasmas (literal)
Abstract
  • Ion temperature gradient (ITG) driven modes in the presence of impurity ions are studied in reversed-field pinch plasmas by solving the gyrokinetic integral eigenmode equation. Detailed numerical studies for single and multiple impurity ion species indicate that the ITG modes are enhanced by impurity effects and the stability threshold values become higher than that in pure hydrogen plasmas when density gradients of the impurity ions are opposite to that of electrons and main ions. In addition, a mode is driven unstable by impurity ions no matter how low the main ion temperature gradient is when the destabilizing effect of the impurity ions is strong enough. These results resemble the effects of impurities in tokamak plasmas. Analysis of the typical RFX-mod experiments is performed and the results show that the ITG and impurity driven modes may be linearly unstable in the edge region of the plasmas when the observed radial profiles of the impurity ions are considered. (literal)
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