Tearing Mode Rotation by External Field in a Reversed Field Pinch
| Autor: | Piergiorgio Sonato, S. Ortolani, Giuseppe Chitarin, T. Bolzonella, R. Piovan, R. Bartiromo, A. Masiello, Giuseppe Zollino, A. Buffa, S. Martini |
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| Rok vydání: | 1999 |
| Předmět: |
Physics
plasma confinement Toroid Deformation (mechanics) Condensed matter physics Reversed field pinch Physics::Medical Physics General Physics and Astronomy reversed field pinch Rotation Imaging phantom Classical mechanics Physics::Plasma Physics Position (vector) High harmonic generation Phase conjugation |
| Zdroj: | Scopus-Elsevier Physical review letters 83 (1999): 1779–1782. doi:10.1103/PhysRevLett.83.1779 info:cnr-pdr/source/autori:R. Bartiromo; T. Bolzonella; A. Buffa; G. Chitarin; S. Martini; A. Masiello; S. Ortolani; R. Piovan; P. Sonato; G. Zollino/titolo:Tearing Mode Rotation by External Field in a Reversed Field Pinch/doi:10.1103%2FPhysRevLett.83.1779/rivista:Physical review letters (Print)/anno:1999/pagina_da:1779/pagina_a:1782/intervallo_pagine:1779–1782/volume:83 |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.83.1779 |
| Popis: | We present results of the first experiments on resistive tearing mode control in a reversed field pinch by an external $m\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0$ magnetic perturbation. In this way the helical deformation of the plasma column produced by resonant $m\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1$ modes can be localized in a preselected toroidal position. We also show that a continuous toroidal rotation of this deformation can be induced by a rotating external field. From the study of such toroidal rotations the nonlinear origin of the torque acting on the internally resonant modes clearly emerges: in particular, we demonstrate the occurrence of phase conjugation and harmonic generation phenomena. |
| Databáze: | OpenAIRE |
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