http://www.cnr.it/ontology/cnr/individuo/prodotto/ID26089

Direct Two-Dimensional Measurements of the Field-Aligned Current Associated with Plasma Blobs (Articolo in rivista)

Type

Label

Direct Two-Dimensional Measurements of the Field-Aligned Current Associated with Plasma Blobs (Articolo in rivista) (literal)

Anno

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

Alternative label

I. Furno; M. Spolaore; C. Theiler; N. Vianello; R. Cavazzana; A. Fasoli (2011)
Direct Two-Dimensional Measurements of the Field-Aligned Current Associated with Plasma Blobs
in Physical review letters (Print); The American Physical Society, College Park, MD 20740-3844 (Stati Uniti d'America)
(literal)

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

I. Furno; M. Spolaore; C. Theiler; N. Vianello; R. Cavazzana; A. Fasoli (literal)

Pagina inizio

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

Article Number: 245001 - La rivista è pubblicata anche online con ISSN 1079-7114. (literal)

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

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

Rivista

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

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

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

Note

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

1 Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (EPFL), Association EURATOM-Confédération Suisse, CH-1015 Lausanne, Switzerland; - 2 Consorzio RFX, Associazione Euratom-ENEA sulla Fusione, Corso Stati Uniti 4, 35127 Padova, Italy. - (I. Furno 1, M. Spolaore 2, C. Theiler 1, N. Vianello 2, R. Cavazzana 2 and A. Fasoli 1) (literal)

Titolo

Direct Two-Dimensional Measurements of the Field-Aligned Current Associated with Plasma Blobs (literal)

Abstract

In simple magnetized toroidal plasmas, field-aligned blobs originate from ideal interchange waves and propagate radially outward under the effect of B and curvature induced E×B drifts. We report on the first experimental two-dimensional measurements of the field-aligned current associated with blobs, whose ends terminate on a conducting limiter. A dipolar structure of the current density is measured, which originates from B and curvature induced polarization of the blob and is consistent with sheath boundary conditions. The dipole is strongly asymmetric due to the nonlinear dependence of the current density at the sheath edge upon the floating potential. Furthermore, we directly demonstrate the existence of two regimes, in which parallel currents to the sheath do or do not significantly damp charge separation and thus blob radial velocity. (literal)

Editore