YANG Sanxiang, ZHAO Yide, DAI Peng, LI Jianpeng, GU Zengjie, MENG Wei, GENG Hai, GUO Ning, JIA Yanhui, YANG Juntai. Instabilities triggered off by electron collision, plasma density gradient, and magnetic field gradient in Hall thrusterJ. Acta Physica Sinica, 2025, 74(2): 025201. DOI: 10.7498/aps.74.20241330