http://www.cnr.it/ontology/cnr/individuo/prodotto/ID26029
Observation of energetic electron confinement in a largely stochastic reversed-field pinch plasma (Articolo in rivista)
- Type
- Label
- Observation of energetic electron confinement in a largely stochastic reversed-field pinch plasma (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1063/1.3292658 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- D. J. Clayton; B. E. Chapman; R. O'Connell; A. F. Almagri; D. R. Burke; C. B. Forest; J. A. Goetz; M. C. Kaufman; F. Bonomo; P. Franz; M. Gobbin; P. Piovesan (literal)
- Pagina inizio
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://pop.aip.org/resource/1/phpaen/v17/i1/p012505_s1 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- Issue 1, Article Number 012505 (literal)
- Note
- Scopu (literal)
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1-8: Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA /
9-12: Consorzio RFX, Euratom-ENEA Association, Corso Stati Uniti, 4 35127 Padova, Italy (literal)
- Titolo
- Observation of energetic electron confinement in a largely stochastic reversed-field pinch plasma (literal)
- Abstract
- Runaway electrons with energies >100 keV are observed with the appearance of an m=1 magnetic island in the core of otherwise stochastic Madison Symmetric Torus [Dexter , Fusion Technol. 19, 131 (1991)] reversed-field-pinch plasmas. The island is associated with the innermost resonant tearing mode, which is usually the largest in the m=1 spectrum. The island appears over a range of mode spectra, from those with a weakly dominant mode to those, referred to as quasi single helicity, with a strongly dominant mode. In a stochastic field, the rate of electron loss increases with electron parallel velocity. Hence, high-energy electrons imply a region of reduced stochasticity. The global energy confinement time is about the same as in plasmas without high-energy electrons or an island in the core. Hence, the region of reduced stochasticity must be localized. Within a numerical reconstruction of the magnetic field topology, high-energy electrons are substantially better confined inside the island, relative to the external region. Therefore, it is deduced that the island provides a region of reduced stochasticity and that the high-energy electrons are generated and well confined within this region. (literal)
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