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In the ultra-short and ultra-intense laser interaction with 7 μm 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, C 4+ , C 3+ , C 2+ and C 1+ 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 C 4+ , C 3+ , C 2+ and C 1+ ions is about 4: 3: 2: 1.


Journal article


Hejubian Yu Dengliziti Wuli/Nuclear Fusion and Plasma Physics

Publication Date





183 - 186