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. 2. Plot of the dephasing length and the cold wave-breaking amplitude versus plasma density. The dephasing length is longer than the interaction length in the red region while shorter than it in the blue region. [ 26 ]