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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
  • ISSN号：1000-3290
  • 期刊名称：《物理学报》
  • 时间：0
  • 分类：TN249[电子电信—物理电子学]
  • 作者机构：[1]天水师范学院物理系,天水741000, [2]中国科学院物理研究所光物理重点实验室,北京100190, [3]上海交通大学物理系,上海200240
  • 相关基金：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.
作者： 令维军[1,2], 董全力[2], 张蕾[2], 张少刚[1], 董忠[1], 魏凯斌[1], 王首钧[2], 何民卿[2], 盛政明[2,3], 张杰[2,3]
关键词： 激光等离子体, 冲击波加速, 能谱展宽, laser-plasma, shock acceleration, spectrum broadening
中文摘要：

本文对超短超强激光脉冲辐照高密度等离子体产生的静电冲击波加速离子的能谱展宽机理进行了数值研究．着重讨论了三种冲击波加速离子的能谱展宽机理：能量沉积到离子中使得冲击波前沿不断减速，被加速离子与背景粒子的碰撞，以及高能离子到达靶背面时受到鞘层场进一步加速．还研究了驱动激光脉冲宽度对冲击波加速离子能谱宽度的影响．

英文摘要：

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.

同期刊论文项目
强激光与高密度等离子体相互作用中冲击波的产生和离子加速过程的研究
期刊论文 28
基于全光技术的高效率阿秒驱动源产生研究
期刊论文 23 获奖 1
激光高次谐波在等离子体中的受激辐射放大——基于激光等离子体的高重复频率软x射线激光理论与实验优化研究
期刊论文 32
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期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
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  • 被引量:49876