物理学报2011，Vol.60Issue(7)：467-471,5.
高密度平面靶等离子体中激光驱动冲击波加速离子的能谱展宽
Laser driven shock accelerated ion energy spectrum broadening mechanisms in over-dense plasmas
摘要
Abstract
The broadening mechanisms are investigated for the energy spectrum of ions accelerated by electrostatic shocks in overdense plasmas irradiated by intense ultra-short laser pulses. It is found that the width of the shock-accelerated ion spectrum could be ineluctably broadened by three mechanisms, which are the continuously decreasing speed of the shock front due to the energy dissipation into ions, the collisions between the particles, and the further acceleration by the sheath field at the rear of target where when energetic ions arrive. Other effects, such as effect of driving laser pulse duration, are also studied.关键词
激光等离子体/冲击波加速/能谱展宽Key words
laser-plasma/shock acceleration/spectrum broadening分类
信息技术与安全科学引用本文复制引用
令维军,张杰,董全力,张蕾,张少刚,董忠,魏凯斌,王首钧,何民卿,盛政明..高密度平面靶等离子体中激光驱动冲击波加速离子的能谱展宽[J].物理学报,2011,60(7):467-471,5.基金项目
国家自然科学基金（批准号：60878020,10774184,11074297）,中国科学院创新项目（批准号：KJCX2.Yw.T01）,国家重点基础研究发展计划（批准号：2007CB815101）和天水师范学院青蓝工程项目资助的课题. （）
