Instability of a high-frequency wave in irradiated and streaming dusty plasmas

摘要

The instability of a high-frequency wave, such as the Langmuir wave (LW) is studied using a Vlasov-kinetic model in streaming and irradiated dust 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. It is found that the dust charge fluctuation makes the LW unstable and this instability linearly adds to the Landau effect. Growth rate of the instability LW is discussed. Discussion is also given to justify the theory and to verify it in the laboratory experiment.