Theoretical Investigation of Langmuir Wave Instability in Irradiated Dusty Plasmas
نویسنده
چکیده
Instability of high frequency wave, such as, Langmuir wave (LW) is studied using fluid model in collisional and streaming dusty plasma with dust charge fluctuation. In irradiated dusty plasma, dust charge fluctuation is considered to be due to the combined effect of LW perturbation and photoelectron emission. The piled up electrons on a dust grain due to LW perturbation can be swept out by photoelectric effect. The LW can be unstable due to dust charge fluctuation effect when the streaming velocity of electrons exceeds the phase velocity of the wave, provided that the electron neutral collisional damping is negligible. Growth rate of the instability of LW is discussed.
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