Matches in SemOpenAlex for { <https://semopenalex.org/work/W2101851074> ?p ?o ?g. }
- W2101851074 endingPage "S879" @default.
- W2101851074 startingPage "S868" @default.
- W2101851074 abstract "Alfvén cascade (AC) eigenmodes excited by energetic ions accelerated with ion-cyclotron resonance heating in JET reversed-shear discharges are studied experimentally in high-density plasmas fuelled by neutral beam injection (NBI) and by deuterium pellets. The recently developed O-mode interferometry technique and Mirnov coils are employed for detecting ACs. The spontaneous improvements in plasma confinement (internal transport barrier (ITB) triggering events) and grand ACs are found to correlate within 0.2 s in JET plasmas with densities up to ∼5 × 1019 m−3. Measurements with high time resolution show that ITB triggering events happen before 'grand' ACs in the majority of JET discharges, indicating that this improvement in confinement is likely to be associated with the decrease in the density of rational magnetic surfaces just before qmin(t) passes an integer value. Experimentally observed ACs excited by sub-Alfvénic NBI-produced ions with parallel velocities as low as V||NBI ≈ 0.2 · VA are found to be most likely associated with the geodesic acoustic effect that significantly modifies the shear-Alfvén dispersion relation at low frequency. Experiments were performed with a tritium NBI-blip (short time pulse) into JET plasmas with NBI-driven ACs. Although considerable NBI-driven AC activity was present, good agreement was found both in the radial profile and in the time evolution of DT neutrons between the neutron measurements and the TRANSP code modelling based on the Coulomb collision model, indicating the ACs have at most a small effect on fast particle confinement in this case." @default.
- W2101851074 created "2016-06-24" @default.
- W2101851074 creator A5026533721 @default.
- W2101851074 creator A5027280411 @default.
- W2101851074 creator A5029350696 @default.
- W2101851074 creator A5032979790 @default.
- W2101851074 creator A5038085546 @default.
- W2101851074 creator A5041276876 @default.
- W2101851074 creator A5049435736 @default.
- W2101851074 creator A5050193292 @default.
- W2101851074 creator A5056801402 @default.
- W2101851074 creator A5063462403 @default.
- W2101851074 creator A5067992248 @default.
- W2101851074 creator A5069076784 @default.
- W2101851074 creator A5070451829 @default.
- W2101851074 creator A5071036385 @default.
- W2101851074 creator A5072915206 @default.
- W2101851074 creator A5077860575 @default.
- W2101851074 creator A5079335141 @default.
- W2101851074 creator A5084116436 @default.
- W2101851074 creator A5085227152 @default.
- W2101851074 date "2006-09-18" @default.
- W2101851074 modified "2023-10-18" @default.
- W2101851074 title "Alfvén cascades in JET discharges with NBI-heating" @default.
- W2101851074 cites W1965508993 @default.
- W2101851074 cites W1965598094 @default.
- W2101851074 cites W1966821407 @default.
- W2101851074 cites W1975874225 @default.
- W2101851074 cites W1979886617 @default.
- W2101851074 cites W2001970438 @default.
- W2101851074 cites W2003354318 @default.
- W2101851074 cites W2012295336 @default.
- W2101851074 cites W2023161921 @default.
- W2101851074 cites W2044012576 @default.
- W2101851074 cites W2052952820 @default.
- W2101851074 cites W2056703164 @default.
- W2101851074 cites W2064579362 @default.
- W2101851074 cites W2068132965 @default.
- W2101851074 cites W2068330774 @default.
- W2101851074 cites W2068947761 @default.
- W2101851074 cites W2070062454 @default.
- W2101851074 cites W2079155075 @default.
- W2101851074 cites W2085261936 @default.
- W2101851074 cites W2091195885 @default.
- W2101851074 cites W2111158555 @default.
- W2101851074 cites W2113876044 @default.
- W2101851074 cites W2141591107 @default.
- W2101851074 cites W2150292163 @default.
- W2101851074 cites W2170475717 @default.
- W2101851074 cites W2312914963 @default.
- W2101851074 cites W4246018309 @default.
- W2101851074 doi "https://doi.org/10.1088/0029-5515/46/10/s02" @default.
- W2101851074 hasPublicationYear "2006" @default.
- W2101851074 type Work @default.
- W2101851074 sameAs 2101851074 @default.
- W2101851074 citedByCount "39" @default.
- W2101851074 countsByYear W21018510742012 @default.
- W2101851074 countsByYear W21018510742013 @default.
- W2101851074 countsByYear W21018510742014 @default.
- W2101851074 countsByYear W21018510742016 @default.
- W2101851074 countsByYear W21018510742017 @default.
- W2101851074 countsByYear W21018510742018 @default.
- W2101851074 countsByYear W21018510742019 @default.
- W2101851074 countsByYear W21018510742020 @default.
- W2101851074 countsByYear W21018510742021 @default.
- W2101851074 countsByYear W21018510742022 @default.
- W2101851074 crossrefType "journal-article" @default.
- W2101851074 hasAuthorship W2101851074A5026533721 @default.
- W2101851074 hasAuthorship W2101851074A5027280411 @default.
- W2101851074 hasAuthorship W2101851074A5029350696 @default.
- W2101851074 hasAuthorship W2101851074A5032979790 @default.
- W2101851074 hasAuthorship W2101851074A5038085546 @default.
- W2101851074 hasAuthorship W2101851074A5041276876 @default.
- W2101851074 hasAuthorship W2101851074A5049435736 @default.
- W2101851074 hasAuthorship W2101851074A5050193292 @default.
- W2101851074 hasAuthorship W2101851074A5056801402 @default.
- W2101851074 hasAuthorship W2101851074A5063462403 @default.
- W2101851074 hasAuthorship W2101851074A5067992248 @default.
- W2101851074 hasAuthorship W2101851074A5069076784 @default.
- W2101851074 hasAuthorship W2101851074A5070451829 @default.
- W2101851074 hasAuthorship W2101851074A5071036385 @default.
- W2101851074 hasAuthorship W2101851074A5072915206 @default.
- W2101851074 hasAuthorship W2101851074A5077860575 @default.
- W2101851074 hasAuthorship W2101851074A5079335141 @default.
- W2101851074 hasAuthorship W2101851074A5084116436 @default.
- W2101851074 hasAuthorship W2101851074A5085227152 @default.
- W2101851074 hasConcept C116515362 @default.
- W2101851074 hasConcept C119947313 @default.
- W2101851074 hasConcept C121332964 @default.
- W2101851074 hasConcept C145148216 @default.
- W2101851074 hasConcept C181500209 @default.
- W2101851074 hasConcept C184779094 @default.
- W2101851074 hasConcept C185544564 @default.
- W2101851074 hasConcept C2776059347 @default.
- W2101851074 hasConcept C39527238 @default.
- W2101851074 hasConcept C57879066 @default.
- W2101851074 hasConcept C62520636 @default.
- W2101851074 hasConcept C82706917 @default.