@prefix prodottidellaricerca: . @prefix istituto: . @prefix prodotto: . istituto:CDS033 prodottidellaricerca:prodotto prodotto:ID240054 . @prefix pubblicazioni: . @prefix unitaDiPersonaleInterno: . unitaDiPersonaleInterno:MATRICOLA12315 pubblicazioni:autoreCNRDi prodotto:ID240054 . @prefix unitaDiPersonaleEsterno: . unitaDiPersonaleEsterno:ID6628 pubblicazioni:autoreCNRDi prodotto:ID240054 . @prefix rdf: . @prefix retescientifica: . prodotto:ID240054 rdf:type retescientifica:ProdottoDellaRicerca , prodotto:TIPO1101 . @prefix rdfs: . prodotto:ID240054 rdfs:label "Dissipative saturation structure and transport effects of selfexcited microisland in tokamaks (Articolo in rivista)"@en . @prefix xsd: . prodotto:ID240054 pubblicazioni:anno "1998-01-01T00:00:00+01:00"^^xsd:gYear ; pubblicazioni:doi "10.1088/0029-5515/38/8/304"^^xsd:string . @prefix skos: . prodotto:ID240054 skos:altLabel "
E. Minardi and E. Lazzaro (1998)
Dissipative saturation structure and transport effects of selfexcited microisland in tokamaks
in Nuclear fusion (Online)
"^^rdf:HTML ; pubblicazioni:autori "E. Minardi and E. Lazzaro"^^xsd:string ; pubblicazioni:paginaInizio "1161"^^xsd:string ; pubblicazioni:paginaFine "1176"^^xsd:string ; pubblicazioni:url "http://iopscience.iop.org/0029-5515/38/8/304/"^^xsd:string ; pubblicazioni:numeroVolume "38"^^xsd:string . @prefix ns11: . prodotto:ID240054 pubblicazioni:rivista ns11:ID262046 ; skos:note "ISI Web of Science (WOS)"^^xsd:string ; pubblicazioni:affiliazioni "Istituto di Fisica del Plasma, Associazione Euratom-ENEA-CNR, Milan, Italy"^^xsd:string ; pubblicazioni:titolo "Dissipative saturation structure and transport effects of selfexcited microisland in tokamaks"^^xsd:string ; prodottidellaricerca:abstract "The possibility of self-excitation in tokamaks of microislands (whose width is much smaller than the ion gyroradius and whose mode numbers m and n are large) by pumping energy from the plasma through the interaction of the ions with densely packed island chains has been suggested in recent years by Kadomtsev. A number of questions are addressed in this article in the context of this suggestion. The time dependent island evolution equations are analysed in the linear approximation in the presence of energy pumping and resistive damping. In the stationary case the non-linear partial differential equation describing the structure of the microislands is reformulated and solved numerically, elucidating how the topology of the islands is affected by non-linearity. The saturation conditions of self-excited microislands are discussed on the basis of the energy integral of the evolution equations, assuming that the pumping is balanced by damping arising from a resistive-like anomalous dissipation related to a resonant electron-island wave interaction. The saturated island width is expressed in terms of the physical and geometrical parameters of the tokamak. The consequences for plasma transport and the scaling of the energy confinement time with respect to these parameters are presented."@en ; prodottidellaricerca:prodottoDi istituto:CDS033 ; pubblicazioni:autoreCNR unitaDiPersonaleInterno:MATRICOLA12315 , unitaDiPersonaleEsterno:ID6628 . ns11:ID262046 pubblicazioni:rivistaDi prodotto:ID240054 .