物理学报2012，Vol.61Issue(16)：322-328,7.
超短超强激光导引及对电子加速的影响
Ultra-short ultra-intense laser guiding and its influence on electron acceleration
摘要
Abstract
Simulations and analyses of ultra-short ultra-intense laser propagting in plasmas with uniform and parabolic density profiles, as well as the electron injection into the wake field and the electron spectra in the stable transmission state are performed by using a particle-in-cell code. Fixing the incident laser focal spot size but changing the plasma density in a range of （0.4-2）× 10^19/cm3, comparative analyses are carded out of the evolutions of the laser beam spot during the propagation of the laser pulse in the plasmas with aforementioned two density profiles, with the normalized laser intensity ranging from 1 to 6. The results show that a plasma channel with a parabolic density profile can realize a good guiding of an ultra-short ultra-intense pulse, which is beneficial for high energy electron acceleration. However, at higher densities, self-guiding can be realized by relativistic self-focusing in uniform plasma, which is conducive to simplifying the experiment and to producing more accelerated electrons.关键词
激光传输/电子加速/粒子模拟Key words
laser propagation/electron acceleration/particle-in-cell simulation分类
信息技术与安全科学引用本文复制引用
王广辉,王晓方,董克攻..超短超强激光导引及对电子加速的影响[J].物理学报,2012,61(16):322-328,7.基金项目
国家自然科学基金-中国工程物理研究院联合基金（批准号：10876039）和国家自然科学基金（批准号：11075160）资助的课题. （）
