物理学报Issue(14)：1-6,6.DOI:10.7498/aps.64.144102
超强圆偏振激光直接加速产生超高能量电子束∗
Ultrahigh-energy electron b eam generated by ultra-intense circularly p olarized laser pulses
摘要
Abstract
The earlier research showed that circularly polarized laser pulses with peak intensities in a range of 1022–1025 W/cm2 can directly accelerate and generate GeV–TeV monoenergetic electron beams with a linear energy scaling with the laser intensity. To obtain higher energy electron beams, a scheme is proposed to use an electron beam with an initial energy E0 along the laser propagation direction. This scheme can overcome the linear energy scaling with E0 = 0 obtained previously and enhance the beam energy by E0 folds. This is because an electron beam with an initial energy can move with the laser pulse together and therefore obtain a longer acceleration distance. Two-dimensional particle-in-cell simulation shows that this scheme is effective only for the electron beams initially with low energy on the order of MeV. With overhigh energy, electrons will miss the optimum acceleration field because the electron acceleration distance is much longer than the Rayleigh distance and the laser intensity is significantly attenuated.关键词
电子加速/超强激光/粒子模拟Key words
electron acceleration/ultra-intense laser/particle-in-cell simulation引用本文复制引用
尹传磊,王伟民,廖国前,李梦超,李玉同,张杰..超强圆偏振激光直接加速产生超高能量电子束∗[J].物理学报,2015,(14):1-6,6.基金项目
国家重点基础研究发展计划(批准号:2013CBA01501)和国家自然科学基金(批准号:11105217,11375261,11375262)资助的课题.@@@@* Project supported by the State Key Development Program for Basic Research of China (Grant No.2013CBA01501) and the National Natural Science Foundation of China (Grant Nos.11105217,11375261,11375262) （批准号:2013CBA01501）
