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PIC simulation of plasma properties in the discharge channel of a pulsed plasma thruster with flared electrodes

机译：PIC模拟脉冲电极脉冲等离子体推进器的放电通道中的等离子体特性

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Plasma in the discharge channel of a pulsed plasma thruster (PPT) with flared electrodes is simulated by a self-developed two-dimensional code. The fully particle-in-cell method with Monte Carlo collision is employed to model the particle movement and collisions and investigate the plasma properties and acceleration process. Temporal and spatial variations of the electron density distribution and the ion velocity between electrodes are calculated and analyzed in detail. The computational results of the electron number density, which is in the order of 10(23) m(-3), show good agreements with experimental results of a PPT named ADD SIMP-LEX. The ion velocity distributions along the center line of the channel lead to a comprehensive understanding of ions accelerated by electromagnetic field. The electron distributions of PPT with discharge voltages varying from 1300 to 2000 V are compared. The diffusion of electrons presents strong dependency on discharge voltage and implies higher degree of ionization for higher voltage.
机译：通过自开发的二维码模拟具有喇叭形电极的脉冲等离子体推进器（PPT）的放电通道中的等离子体。采用蒙特卡罗碰撞的全颗粒粒细胞方法来模拟颗粒运动和碰撞并研究等离子体性能和加速过程。计算和分析电子密度分布的时间和空间变化和电极之间的离子速度。电子数密度的计算结果，大约为10（23）米（-3），表现出良好的协议，与名为Add Simp-Lex的PPT的实验结果。沿着通道的中心线的离子速度分布导致通过电磁场加速的离子的全面了解。比较了从1300到2000V变化的放电电压的PPT电子分布。电子的扩散呈现出对放电电压的强依赖性，并且暗示更高的电离程度以获得更高的电压。

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