飞秒激光与双层靶相互作用靶背质子加速实验研究  

Experimental Research of Protons Generated Femtosecond Laser and Double Target Interaction at the Rear Side of Target

作　　者：唐翠明[1] 陈晓旭[1] 洪伟[2] 王君[1] 胡燕飞[1] 王瑜[1] 

机构地区：[1]四川理工学院理学院,四川自贡643002 [2]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《信阳师范学院学报（自然科学版）》2012年第2期172-174,共3页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：四川省教育厅科研项目(11ZB254);四川理工学院理学院科研项目(09LXYB04)

摘　　要：研究了飞秒激光与10μm的Cu和5μm的C8H8构成的双层薄膜靶相互作用中在靶背法线方向质子的能量分布.采用CR39固体核径迹探测器和Thomson磁谱仪相结合测量质子能谱.实验结果表明:质子沿着靶背法线方向发射;随着质子能量的增加,质子数减少;质子在一定能量处出现截断,截止能是1179 keV.The energy distributions of the protons were studied at the target back normal direction generated by interaction of the femtosecond laser with 10 μm Cu and 5μm C8H8 double target.The CR39 solid state nuclear track detector combined with the thomson spectrum are used to measure the energy spectrum of the protons ment in the experiment.The results showed that the protons are emitted along the target rear-side normal direction and the proton beam was decreased with the increasing of proton energy.In addition,the protons disappeared at a certain energy 1179 keV.

关 键 词：飞秒激光 质子 能谱 CR39 Thomson磁谱仪 

分 类 号：O434.12[机械工程—光学工程] TL65[理学—光学]