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激光尾波场加速器中反向注入激光脉冲参数对电子注入的影响

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摘要 通过数值模拟和理论分析,研究了由两反向传播的激光脉冲在稀薄等离子体中的相互作用造成的向激光尾波场中注入电子的物理过程,并讨论了两激光脉冲参数对注入电子数目的影响.通常注入脉冲的强度可以远小于产生尾波场的主脉冲强度.当注入脉冲为中等强度时,注入电子数首先随注入脉冲宽度的增加而增加,直到注入脉冲宽度达到某个临界值后,注入电子数饱和.当减小注入脉冲强度时,为了产生电子注入,相应的主脉冲强度应该提高.此时注入脉冲仅能轻微地影响主脉冲的尾波场,注入电子数随注入脉冲宽度的增加而持续增加,直到尾波场能够承受的捕获电子数目极限.
出处 《科学通报》 EI CAS CSCD 北大核心 2008年第12期1370-1374,共5页 Chinese Science Bulletin
基金 国家自然科学基金(批准号:10425416,10674175,60621063)、国家高技术研究发展计划惯性约束聚变主题和国家重点基础研究发展计划(编号:2007CB815105)资助项目
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