Tan Fang, Zhang Xiao-Hui, Zhu Bin, Li Gang, Wu Yu-Chi, Yu Ming-Hai, Yang Yue, Yan Yong-Hong, Yang Jing, Fan Wei, Dong Ke-Gong, Lu Feng, Gu Yu-Qiu. Mixed injection mechanism assisted cascaded laser wakefield acceleratorJ. Acta Physica Sinica, 2019, 68(17): 175201. DOI: 10.7498/aps.68.20190484