We present results of the first experiments on resistive tearing mode control in a reversed field pinch by an external m 0 magnetic perturbation. In this way the helical deformation of the plasma column produced by resonant m 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.

Tearing mode rotation by external field in a reversed field pinch

T. BOLZONELLA;BUFFA, ANTONIO;CHITARIN, GIUSEPPE;SONATO, PIERGIORGIO;ZOLLINO, GIUSEPPE
1999

Abstract

We present results of the first experiments on resistive tearing mode control in a reversed field pinch by an external m 0 magnetic perturbation. In this way the helical deformation of the plasma column produced by resonant m 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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2463057
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