Investigation on plasma characteristics in a laser ablation pulsed plasma thruster by optical emission spectroscopy  

作　　者：Yu ZHANG Jianjun WU Yang OU Daixian ZHANG Jian LI 张宇;吴建军;欧阳;张代贤;李健(College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,People’s Republic of China;China Aerodynamics Research and Development Center,Mianyang 621000,People's Republic of China)

机构地区：[1]College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,People’s Republic of China [2]China Aerodynamics Research and Development Center,Mianyang 621000,People's Republic of China

出　　处：《Plasma Science and Technology》2020年第4期83-89,共7页等离子体科学和技术（英文版）

基　　金：National Natural Science Foundation of China for the financial assistance provided under the grant number 11772354.

摘　　要：In order to further improve the propulsion performance of pulsed plasma thrusters for space micro propulsion,a novel laser ablation pulsed plasma thruster is proposed,which separated the laser ablation and electromagnetic acceleration.Optical emission spectroscopy is utilized to investigate the plasma characteristics in the thruster.The spectral lines at different times,positions and discharge intensities are experimentally recorded,and the plasma characteristics in the discharge channel are concluded through analyzing the variation of spectral lines.With the discharge energy of 24 J,laser energy of 0.6 J and the use of aluminum propellant,the specific impulse and thrust efficiency reach 6808 s and 70.6%,respectively.

关 键 词：laser ablation PULSED PLASMA THRUSTER optical EMISSION SPECTROSCOPY PLASMA PROPULSION performance 

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]