Study Of Dust Plasma Waves Excited By Rocket Products In The Ionosphere

In recent years,the artificial dust plasma in the ionosphere has become one of the hot topics.Rocket products can change the characteristics of the ionosphere and also influence the propagation of radar and radio signals.In this paper,the dust plasma wave is studied,which was excited by the rocket products in the ionosphere.The main research results are as follows:1.We theoretically analyzed the waves excited by the dust beam in the ionosphere.The dispersion relation of system is derived for our investigation.We also studied the plasma wave excited by the dust beam in different frequency ranges.2.By using the PIC simulation method.The numerical results are given in the present paper to investigate the instability of the waves excited by the dust beam in the ionosphere.It is noted that the waves are stable in both the electron and ion vibration scales,while it is unstable in the dust grain vibration scale.In the electron time scale,the wave is possibly the high hybrid wave.In the ion time scale,the waves dispersion relation may satisfy the relation of??28??_pi?10?kV₀.In the dust grain vibration time scale,no regular relation is found since the waves are unstable.