Wang Guo-Jian, Liu Yan-Wen, Li Fen, Tian Hong, Zhu Hong, Li Yun, Zhao Heng-Bang, Wang Xiao-Xia, Zhang Zhi-Qiang. Effect of ion-beam surface treatment on photocathode emissionJ. Acta Physica Sinica, 2021, 70(21): 218503. DOI: 10.7498/aps.70.20210587