Plasma density transition-based electron injection in laser wake field acceleration driven by a flying focus laser

作     者：耿盼飞 陈民 安相炎 刘维媛 祝昕哲 李建龙 李博原 盛政明 Pan-Fei Geng;Min Chen;Xiang-Yan An;Wei-Yuan Liu;Xin-Zhe Zhu;Jian-Long Li;Bo-Yuan Li;Zheng-Ming Sheng

作者机构：Key Laboratory for Laser Plasmas(Ministry of Education)School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of IFSA(CICIFSA)Shanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2023年第32卷第4期

页      面：302-310页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11991074 12225505 and12135009) 

主　　题：density transition injection laser wakefield acceleration flying focus laser 

摘      要：By using a high-intensity flying focus laser,the dephasingless[***.124134802(2020)]or phase-locked[***.14475(2020)]laser wakefield acceleration(LWFA)can be realized,which may overcome issues of laser diffraction,pump depletion,and electron dephasing which are always suffered in usual *** scheme thus has the potentiality to accelerate electrons to Te V energy in a single acceleration ***,the controlled electron injection has not been self-consistently included in such *** external injection was suggested in previous theoretical studies,which requires other accelerators and is relatively difficulty to ***,we numerically study the actively controlled density transition injection in phase-locked LWFA to get appropriate density profiles for amount of electron *** study shows that compared with LWFA driven by lasers with fixed focus,a larger plasma density gradient is *** experience both transverse and longitudinal loss during acceleration due to the superluminal group velocity of the driver and the variation of the wakefield ***,the periodic deformation and fracture of the flying focus laser in the high-density plasma plateau make the final injected charge also depend on the beginning position of the density *** studies show a possible way for amount of electron injection in LWFA driven by flying focus lasers.