High-frequency harmonic generation in a toroidal magnetized laboratory plasma and detection of plasma turbulenceA. Ajendouz1, 2, Th. Pierre1, M. Boussouis2 and K. Quotb1
1 Laboratoire PIIM, CNRS et Université de Provence - F-13397 Marseille Cedex 20, France
2 Département de Physique, Faculté des Sciences - BP 2121, 93000 Tétouan, Maroc
received 20 June 2007; accepted in final form 29 October 2007; published January 2008
published online 19 November 2007
We show for the first time experimentally that plasma turbulence can be detected easily when an electromagnetic extraordinary wave launched from the inner side of a toroidal magnetized plasma reaches a turbulent resonance layer. The second-harmonic wave generated inside the resonance layer is detected from outside the magnetized plasma and its power spectrum is analyzed. This new technique could be developed for distant probing of plasma turbulence.
52.35.Mw - Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.).
52.35.Hr - Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid).
52.70.-m - Plasma diagnostic techniques and instrumentation.
© EPLA 2008