Ion wave excitation by double resonance coupling in a magnetized plasma
The remote excitation of low frequency oscillations by means of a modulated high frequency resonant wave is investigated in a magnetised laboratory plasma. Measurements of the ion dielectric response (interferograms and perturbed distribution functions) via laser induced fluorescence identify the launched ion modes as the two branches (forward and backward, or Bernstein) of the electrostatic dispersion relation in the ion cyclotron frequency range. In the case of a frequency modulated pump wave, a control on the perpendicular wavelength of the excited mode can be obtained by acting on the modulation parameters.
Bibliographic Reference: Paper presented: International Workshop of Plasma Physics on "Controlled Active Global Experiments", Varenna (IT), Sept. 5-12, 1990
Availability: Available from (1) as Paper EN 35634 ORA
Record Number: 199011641 / Last updated on: 1994-12-02
Original language: en
Available languages: en