Nonlinear mixing as a plasma density probe

Details Nonlinear mixing as a plasma density probe Nonlinear mixing as a plasma density probe

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.1985d&link_type=abstract

Journal of Geophysical Research, vol. 83, May 1, 1978, p. 1985-1990.

Other

12

Electromagnetic Scattering, Electrostatic Waves, Ionospheric Propagation, Plasma Density, Plasma Probes, Plasma-Electromagnetic Interaction, Wave Excitation, Coherent Scattering, Eiscat Radar System (Europe), Nonlinear Systems, Radar Measurement, Scattering Cross Sections

Scientific paper

The application of nonlinear mixing of EM waves to plasma density probing is studied for the case of an inhomogeneous isotropic and collisionless plasma; particular values are assumed for the ratio of electron thermal velocity to the speed of light and the local characteristic length for electron density variation. Two types of Langmuir wave excitation are found, one associated with resonant wave mixing and the other with nonlinear conversion occurring at the critical surface where the difference frequency of the two EM waves equals the local plasma frequency. The nonlinear conversion effect may be used with radar facilities for ionospheric scattering experiments.

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