MHD activity in FTU plasmas with reversed magnetic shear
| Autor: | C. Centioli, V. Pericoli Ridolfini, S. Podda, Marco Ciotti, S. Ciattaglia, A Mancuso, G. Maddaluno, O. Tudisco, M. Grolli, Gregorio Vlad, D. Frigione, G. Buceti, Angelo A. Tuccillo, F. Alladio, G. Maffia, Alessandro Simonetto, Carlo Sozzi, E. Barbato, A. Bertocchi, B. Angelini, D Pacella, P. Buratti, R. De Angelis, G. Apruzzese, M.L. Apicella, G Gatti, H. Kroegler, M Panella, G. Bracco, F. Santini, V Vitale, F. P. Orsitto, L. Panaccione, P Micozzi, S. Sternini, V Zanza, F Valente, B Esposito, L Gabellieri, L. Acitelli, F. Crisanti, L. Pieroni, M. Leigheb, Francesco Mirizzi, R. Cesario, Alessandro Bruschi, A Imparato, V Cocilovo, G. Mazzitelli, C. Gourlan, S Cirant, E. Giovannozzi, F. De Marco, M. Marinucci, Gustavo Granucci, G.B. Righetti, S. E. Segre, L. Lovisetto, M. Zerbini, A. Cardinali, M. Sassi, Francesco Romanelli |
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| Zdroj: | Scopus-Elsevier Plasma physics and controlled fusion 39 (1997): B383–B394. doi:10.1088/0741-3335/39/12B/029 info:cnr-pdr/source/autori:Buratti, P; Alladio, F; Micozzi, P; Tudisco, O; Acitelli, L; Angelini, B; Apicella, ML; Apruzzese, G; Barbato, E; Bertocchi, A; Bracco, G; Bruschi, A; Buceti, G; Cardinali, A; Centioli, C; Cesario, R; Ciattaglia, S; Ciotti, M; Cirant, S; Cocilovo, V; Crisanti, F; De Angelis, R; De Marco, F; Esposito, B; Frigione, D; Gabellieri, L; Gatti, G; Giovannozzi, E; Gourlan, C; Granucci, G; Grolli, M; Imparato, A; Kroegler, H; Leigheb, M; Lovisetto, L; Maddaluno, G; Maffia, G; Mancuso, A; Marinucci, M; Mazzitelli, G; Mirizzi, F; Orsitto, FP; Pacella, D; Panaccione, L; Panella, M; Ridolfini, VP; Pieroni, L; Podda, S; Righetti, GB; Romanelli, F; Santini, F; Sassi, M; Segre, SE; Simonetto, A; Sozzi, C; Sternini, S; Tuccillo, AA; Valente, F; Vitale, V; Vlad, G; Zanza, V; Zerbini, M/titolo:MHD activity in FTU plasmas with reversed magnetic shear/doi:10.1088%2F0741-3335%2F39%2F12B%2F029/rivista:Plasma physics and controlled fusion (Print)/anno:1997/pagina_da:B383/pagina_a:B394/intervallo_pagine:B383–B394/volume:39 |
| DOI: | 10.1088/0741-3335/39/12B/029 |
| Popis: | The MHD activity of plasma configurations with reversed magnetic shear has been investigated on the FTU tokamak. In the presence of pairs of surfaces with the same rational value q = m/n of the safety factor, double-tearing modes are excited which give rise in most cases to bursts of sawtooth-like profile rearrangements. More stable regimes have also been found, in which the activity is dominated by rotating saturated modes. In a particular case with q(0) approximate to 2.8 and q(min) approximate to 2.5 a discharge without any detectable MHD activity during the current flat-top has been obtained. In high-temperature regimes (T-e x 8 keV at n(e) approximate to 0.8 x 10(20) m(-3)), an irregular activity has been detected near the plasma centre which could be due to the excitation of resistive interchange modes. |
| Databáze: | OpenAIRE |
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