External current treshold for the unlocking of an island in the presence of a resistive wall (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• External current treshold for the unlocking of an island in the presence of a resistive wall (Articolo in rivista) (literal)

Anno

• 1999-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1088/0029-5515/39/8/301 (literal)

Alternative label

• R. Coelho (a) and E. Lazzaro (b) (1999)
  External current treshold for the unlocking of an island in the presence of a resistive wall
  in Nuclear fusion (Online)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• R. Coelho (a) and E. Lazzaro (b) (literal)

Pagina inizio

• 969 (literal)

Pagina fine

• 972 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://iopscience.iop.org/0029-5515/39/8/301/ (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 39 (literal)

Rivista

• Nuclear fusion (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• (a) Associação Euratom/IST, Centro de Fusão Nuclear, Lisbon, Portugal (b) Istituto di Fisica del Plasma, Associazione Euratom-ENEA-CNR, Milan, Italy (literal)

Titolo

• External current treshold for the unlocking of an island in the presence of a resistive wall (literal)

Abstract

• The unlocking of static resistive tearing modes by rotating external magnetic perturbations such as those which may arise from the natural tokamak error field is discussed. A threshold error field current is shown to exist: below which the mode frequency will not lock to the error field frequency. The slowing down drag applied to the island by the resistive vessel of the tokamak and the unphased magnetic perturbation arising from the error field at the rational surface of the mode eventually set the island into an oscillatory motion around omega approximate to 0 Hz. An upper limit in the error field frequency exists above which the threshold current is insufficient for locking the mode frequency to the error field frequency. This limit depends on the island width, the local plasma density and the non-linear wall response to magnetic perturbations. (literal)

Prodotto di

• Institute for plasma physics \"Piero Caldirola\" (IFP) (Istituto)

Autore CNR

• ENZO LAZZARO (Persona)

Incoming links:

Prodotto

• Institute for plasma physics \"Piero Caldirola\" (IFP) (Istituto)

Autore CNR di

• ENZO LAZZARO (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Nuclear fusion (Rivista)