摘要
实验研究了超短超强激光与7μm薄膜Cu靶的相互作用中靶背法线方向产生的质子和碳离子的能量分布。实验中采用CR39和Thomson磁谱仪相结合测量质子和碳离子能谱。实验中观察到了质子和C4+、C3+、C2+和C1+离子。实验结果表明:离子沿着靶背法线方向发射,离子在一定能量处出现截断;质子的产额远远高于碳离子产额;C4+、C3+、C2+和C1+最大截止能之比约为4:3:2:1。
In the ultra-short and ultra-intense laser interaction with 7pm Cu target, we use CR39 and Thomson spectrometer to detect the energy spectrum of protons and carbon ions at the normal direction of target back. Protons, C4＋, C3＋, C2＋ and C1＋ ions have been observed experimentally. In addition, the results show that the ions are emitted along the target rear-side normal direction and the ions were cut-off at a certain energy. What is more, the yield of proton is much higher than the one of carbon ions, and the ratio of the maximum cut-off energy of the C4＋, C3＋, C2＋ and Cl＋ ions is about 4： 3： 2： 1.
出处
《核聚变与等离子体物理》
CAS
CSCD
北大核心
2012年第2期183-186,共4页
Nuclear Fusion and Plasma Physics
基金
国家自然科学基金资助项目(10275056
10275057)
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)
