zhu tuo, yang jia-min, wang zhe-bin, et al. Experimental study about angular distribution of protons emitted from thin solid target irradiated by supershort laser[J]. High Power Laser and Particle Beams, 2008, 20.
Citation:
zhu tuo, yang jia-min, wang zhe-bin, et al. Experimental study about angular distribution of protons emitted from thin solid target irradiated by supershort laser[J]. High Power Laser and Particle Beams, 2008, 20.
zhu tuo, yang jia-min, wang zhe-bin, et al. Experimental study about angular distribution of protons emitted from thin solid target irradiated by supershort laser[J]. High Power Laser and Particle Beams, 2008, 20.
Citation:
zhu tuo, yang jia-min, wang zhe-bin, et al. Experimental study about angular distribution of protons emitted from thin solid target irradiated by supershort laser[J]. High Power Laser and Particle Beams, 2008, 20.
Research Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China;
2.
National Key Laboratory of High Temperature and Density Plasma Physics,CAEP,Mianyang 621900,China;
3.
Wuhan National Laboratory for Optoelectronics,Institute of Optoelectronics Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China
Proton generation and angular distribution produced by supershort laser pulse irradiating thin solid Au target were investigated. The experiment was performed on the SILEX-Ⅰ laser facility. CR39 was mounted 3.3 cm behind the target to record the protons from the target. How the laser intensity and laser contrast ratio influenced the mechanism of proton acceleration was studied by analysing the proton angular distributions. The primary acceleration mechanism of proton is sensitive to the prepulse. When the prepulse is weak, the primary proton acceleration is target normal sheath acceleration. When the prepulse is strong, most protons is primarily accelerated in the front of target.
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