Abstract
The effects of black-body radiation emitted from a high temperature radiation source on electrostatic plasma wave characteristics in a relatively cold tenuous plasma are theoretically investigated. The ponderomotive force of the photons perturbed by the electron density fluctuation is taken into account. It is shown that the effect is in general very small, but has a logarithmic singularity which corresponds to a radiation induced zero-sound. A significant effect can be expected in a narrow frequency range in which the zero-sound couples with the electron plasma wave.
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