.[11] Zun Zhang, and Haibin Tang. Single Langmuir Probe Dignostics for Characteristic Parameters of the Beam Plasma in Xe Ion Thruster[J], High Voltage Engineering, 39(7), 2013. (in Chinese) .[12] Xing Han, Zun Zhang, Zhiyuan Chen, Marco Marano, Haibin Tang and Jinbin Cao, High-spatial-resolution image reconstruction-based method for measuring electron temperature and density of the very near field of an applied-field magnetoplasmadynamic thruster, [J] Journal of Physics D: Applied Physics, 54 (135203), 2021. .[13] Huihui Wang, Zun Zhang，Kaiyi Yang，Chang Tan，Ruilin Cui , Jiting Ouyang. Axial profiles of argon helicon plasma by optical emission spectroscope and Langmuir probe [J]. Plasma Sci. Technol. 21 (074009), 2019. .[14] Zhang Zhe, Tang Haibin, Zhang Zun, Joseph Wang, Cao Shuai, A retarding potential analyzer design for keV-level ion thruster beams, Review of Scientific Instruments, 2016, 87 (123510). .[15] Yu Qin, Kan Xie, Ning Guo, Zun Zhang, Cen Zhang, Zengjie Gu, Yu Zhang, Zhaorui Jiang, Jiting Ouyang, The analysis of high amplitude of potential oscillations near the hollow cathode of ion thruster, Acta Astronautica, 2017, 134:265-277. .[16] Zun Zhang, Haibin Tang, Yujie Xu, Zhe Zhang, Shuai Cao, Plume Plasma Measurements of a 20-cm Xenon Ion Thruster Using a Multiple-Probe Array, 34th International Electric Propulsion Conference, Hyogo-Kobe, Japan, 2015.07.04-07.10 .[17] Zun Zhang, and Haibin Tang, Investigations on the Flowing Pulsed Plasma of a 20J Pulsed Plasma Thruster, 33th International Electric Propulsion Conference, Washington, D.C., USA, 2013.10.06-10.10 .[18] Zun Zhang, Haibin Tang, Yuan Yang, and Mingxin Li, Electrostatic Probe Measurements in a 4 J Pulsed Plasma Thruster, 32th International Electric Propulsion Conference, Wiesbaden, Germany, 2011.09.11-09.15