Multi-GeV electron beam generation via two-stage laser wakefield acceleration

R Rashid Ul Haq M Mohammad Rezaei-Pandari X Xinglong Xie X Xiao Liang (Department of Chemistry) M Meizhi Sun P Ping Zhu Z Zhantao Lu G Guoli Zhang (School of Chemistry and Chemical Engineering, State Key Laboratory of Synergistic Chem-Bio Synthesis, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Metal-Nano Engineering Science) L Linjun Li H Hao Xue (Queen Mary University of London Engineering School, Northwestern Polytechnical University) N Nasr A. M. Hafz J Jianqiang Zhu