TN242 2000020955高能激光束自动对准和稳定系统的结构设计=Designfor automatically aligning and stabilizing high energy laser beam[刊,中]/刘泽金,舒柏宏,王永仲,陆启生(国防科技大学应用物理系.湖南,长沙(410073))//光学技术.-19...TN242 2000020955高能激光束自动对准和稳定系统的结构设计=Designfor automatically aligning and stabilizing high energy laser beam[刊,中]/刘泽金,舒柏宏,王永仲,陆启生(国防科技大学应用物理系.湖南,长沙(410073))//光学技术.-1999,(1).-19-20介绍了一种用于两个光学平台之间光轴自动对准和稳定光束的设计方案。以可绕X,Y,Z三个方向转动的导光管为单元,组成导光臂连接两个光学平台,消除两个平台之间相对运动产生的光轴对接偏差。展开更多
We present analytical studies of electron acceleration in the low-density preplasma of a thin solid target byan intense femtosecond laser pulse.Electrons in the preplasma are trapped and accelerated by the ponderomoti...We present analytical studies of electron acceleration in the low-density preplasma of a thin solid target byan intense femtosecond laser pulse.Electrons in the preplasma are trapped and accelerated by the ponderomotive forceas well as the wake field.Two-dimensional particle-in-cell simulations show that when the laser pulse is stopped by thetarget,electrons trapped in the laser pules can be extracted and move forward inertially.The energetic electron bunchin the bubble is unaffected by the reflected pulse and passes through the target with small energy spread and emittance.There is an optimal preplasma density for the generation of the monoenergetic electron bunch if a laser pulse is given.The maximum electron energy is inverse proportion to the preplasma density.展开更多
文摘TN242 2000020955高能激光束自动对准和稳定系统的结构设计=Designfor automatically aligning and stabilizing high energy laser beam[刊,中]/刘泽金,舒柏宏,王永仲,陆启生(国防科技大学应用物理系.湖南,长沙(410073))//光学技术.-1999,(1).-19-20介绍了一种用于两个光学平台之间光轴自动对准和稳定光束的设计方案。以可绕X,Y,Z三个方向转动的导光管为单元,组成导光臂连接两个光学平台,消除两个平台之间相对运动产生的光轴对接偏差。
基金Supported by the National Natural Science Foundation of China under Grant Nos.10875015,10834008,10963002the 973 Program under Grant No.2006CB806004Educational Commission of Jiangxi Province of China under Grant No.GJJ10052
文摘We present analytical studies of electron acceleration in the low-density preplasma of a thin solid target byan intense femtosecond laser pulse.Electrons in the preplasma are trapped and accelerated by the ponderomotive forceas well as the wake field.Two-dimensional particle-in-cell simulations show that when the laser pulse is stopped by thetarget,electrons trapped in the laser pules can be extracted and move forward inertially.The energetic electron bunchin the bubble is unaffected by the reflected pulse and passes through the target with small energy spread and emittance.There is an optimal preplasma density for the generation of the monoenergetic electron bunch if a laser pulse is given.The maximum electron energy is inverse proportion to the preplasma density.
