阳极层霍尔推进器磁极刻蚀的实验研究

发布时间：2018-09-19 11:53

【摘要】：为了提出降低阳极层霍尔推进器运行过程中的磁极刻蚀程度的方案,记录磁极刻蚀程度在相关参数影响下的变化,针对阳极层霍尔推进器的放电电流、电压、工质输送速率等工作参数开展实验研究,定量分析了这些影响因子对推进器磁极刻蚀程度的影响。通过测量磁极被溅射出的粒子在样品表面不同位置上的沉积速率,计算出了推进器在不同运行条件下,由于磁极刻蚀而产生的溅射粒子数量和密度。实验结果表明,该推进器在运行过程中,溅射粒子主要集中在羽流中心线附近区域;随着放电电压和电流的增加,溅射粒子的密度显著上升,并且在以羽流中心线为中心,半径为4cm的圆面区域内,溅射粒子密度上升明显;降低工质输送速率,在低气压、高电压和小电流的运行条件下能够有效降低推进器磁极刻蚀程度,实验所采用的霍尔推进器合适的工作气压为0.02~0.025Pa。
[Abstract]:In order to reduce the degree of magnetic pole etching during the operation of the anode layer Hall thruster, the paper records the change of the magnetic pole etching degree under the influence of relevant parameters, aiming at the discharge current and voltage of the anode layer Hall thruster. The influence of these factors on the degree of magnetic pole etching of propeller is analyzed quantitatively. The number and density of sputtering particles produced by magnetic pole etching under different operating conditions were calculated by measuring the deposition rate of the particles sputtering on the surface of the sample. The experimental results show that the sputtering particles mainly concentrate near the center of plume during the operation of the propeller, and the density of the sputtering particles increases significantly with the increase of discharge voltage and current, and is centered on the center line of plume. In the circular area with radius of 4cm, the density of sputtering particles increases obviously, and the working fluid transfer rate is decreased, which can effectively reduce the degree of magnetic pole etching of the propeller under the conditions of low pressure, high voltage and low current. The suitable working pressure of the Hall thruster used in the experiment is 0.02 掳0.025 Pa.
【作者单位】：核工业西南物理研究院;
【基金】：国家自然科学基金(11275063) 四川省应用基础研究项目(2013JY0166)
【分类号】：V439.2

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