Developments in laser wakefield accelerators: From single-stage to two-stage*
Li Wen-Tao, Wang Wen-Tao†, Liu Jian-Sheng‡, Wang Cheng, Zhang Zhi-Jun, Qi Rong, Yu Chang-Hai, Li Ru-Xin, Xu Zhi-Zhan
Fig. 5. Measured single-shot electron beam energy spectra. [ 62 ] a#cod#x2013;b Raw data recorded by the IP; c#cod#x2013;d integrated spectra.