Abstract
A large-amplitude electromagnetic wave, propagating perpendicular to ambient magnetic field in the X-mode, is shown to be susceptible to parametric decay into a short-wavelength electron Bernstein wave and a lower-hybrid wave. The density perturbation associated with the lower-hybrid wave couples to the oscillatory velocity due to the pump to produce a density perturbation driving the Bernstein wave. The Bernstein wave and the pump exert a low-frequency ponderomotive force on electrons, driving the sideband.
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