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High Core Electron Confinement Regimes in FTU Plasmas with Low- or Reversed-Magnetic Shear and High Power Density Electron-Cyclotron-Resonance Heating
- Source :
- Scopus-Elsevier, Physical review letters, 82 (1999): 560–563. doi:10.1103/PhysRevLett.82.560, info:cnr-pdr/source/autori:P. Buratti; E. Barbato; G. Bracco; S. Cirant; F. Crisanti; G. Granucci+; A. A. Tuccillo; V. Zanza; M. Zerbini; L. Acitelli; F. Alladio; B. Angelini; M. L. Apicella; G. Apruzzese; L. Bertalot; A. Bertocchi; M. Borra; A. Bruschi; G. Buceti; A. Cardinali; C. Centioli; R. Cesario; C. Cianfarani; S. Ciattaglia; V. Cocilovo; R. De Angelis; F. De Marco; B. Esposito; D. Frigione; L. Gabellieri; G. Gatti; E. Giovannozzi; C. Gourlan; M. Grolli; A. Imparato; H. Kroegler; M. Leigheb; L. Lovisetto; G. Maddaluno; G. Maffia; M. Marinucci; G. Mazzitelli; P. Micozzi; F. Mirizzi; S. Nowak; F. P. Orsitto; D. Pacella; L. Panaccione; M. Panella; V. Pericoli Ridolfini; L. Pieroni; S. Podda; G. B. Righetti; F. Romanelli; F. Santini; M. Sassi; S. E. Segre; A. SimonettoC. Sozzi; S. Sternini; O. Tudisco; V. Vitale; G. Vlad; and F. Zonca/titolo:High Core Electron Confinement Regimes in FTU Plasmas with Low-or Reversed-Magnetic Shear and High Power Density Electron-Cyclotron-Resonance Heating/doi:10.1103%2FPhysRevLett.82.560/rivista:Physical review letters (Print)/anno:1999/pagina_da:560/pagina_a:563/intervallo_pagine:560–563/volume:82
- Publication Year :
- 1999
- Publisher :
- American Physical Society (APS), 1999.
-
Abstract
- Electron temperatures in excess of 8 keV have been obtained by electron-cyclotron-resonance heating on FTU plasmas at peak densities up to $8\ifmmode\times\else\texttimes\fi{}{10}^{19}\mathrm{m}{}^{\ensuremath{-}3}$. The magnetic shear in the plasma core is low or negative, and the electron heat diffusivity remains at, or below, the Ohmic level $(0.2\mathrm{m}{}^{2}/\mathrm{s})$, in spite of the very large heating power density $(10--20\mathrm{MW}/\mathrm{m}{}^{3})$ which produces extremely high temperature gradients (up to 120 keV/m). The ion heat transport remains at the neoclassical level.
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 82
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....83acbc6940c9c44960287362f599c0ca