The E×B drift instability in Hall thruster using 1D PIC/MCC simulation  

作　　者：Zahra Asadi Mehdi Sharifian Mojtaba Hashemzadeh Mahmood Borhani Zarandi Hamidreza Ghomi Marzdashti 

机构地区：[1]Physics Department,Yazd University,Safaiyeh,Yazd,Iran [2]Faculty of Physics,Shahrood University of Technology,Shahrood,Iran [3]Laser and Plasma Research Institute,Shahid Beheshti University,G.C.,Evin,Tehran,Iran

出　　处：《Chinese Physics B》2020年第2期366-373,共8页中国物理B（英文版）

摘　　要：The E×B drift instability is studied in Hall thruster using one-dimensional particle in cell(PIC)simulation method.By using the dispersion relation,it is found that unstable modes occur only in discrete bands in k space at cyclotron harmonics.The results indicate that the number of unstable modes increases by increasing the external electric field and decreases by increasing the radial magnetic field.The ion mass does not affect the instability wavelength.Furthermore,the results confirm that there is an instability with short wavelength and high frequency.Finally,it is shown that the electron and ion distribution functions deviate from the initial state and eventually the instability is saturated by ion trapping in the azimuthal direction.Also for light mass ion,the frequency and phase velocity are very high that could lead to high electron mobility in the axial direction.The E×B drift instability is studied in Hall thruster using one-dimensional particle in cell(PIC) simulation method.By using the dispersion relation,it is found that unstable modes occur only in discrete bands in k space at cyclotron harmonics.The results indicate that the number of unstable modes increases by increasing the external electric field and decreases by increasing the radial magnetic field.The ion mass does not affect the instability wavelength.Furthermore,the results confirm that there is an instability with short wavelength and high frequency.Finally,it is shown that the electron and ion distribution functions deviate from the initial state and eventually the instability is saturated by ion trapping in the azimuthal direction.Also for light mass ion,the frequency and phase velocity are very high that could lead to high electron mobility in the axial direction.

关 键 词：plasma HALL THRUSTER particle in cell(PIC)simulation DRIFT INSTABILITY 

分 类 号：V439.2[航空宇航科学与技术—航空宇航推进理论与工程]