外文题目: Focal spot effects on the generation of proton beams during target normal sheath acceleration
作者: Wang, W. P.; Shen, B. F.; Zhang, H.; Lu, X. M.; Wang, C.; Liu, Y. Q.; Yu, L. H.; Chu, Y. X.; Li, Y. Y.; Xu, T. J.; Zhang, H.; Zhai, S. H.; Leng, Y. X.; Liang, X. Y.; Li, R. X.; Xu, Z. Z.
刊名: Plasma Phys. Control. Fusion
年: 2016 卷: 58 期: 2 文章编号：25010
英文关键词:
target normal sheath acceleration; focal spot effects; high-intensity high-contrast laser
LASER-PLASMA INTERACTION; ION ACCELERATORS; INTENSITY LASER; PULSES; SOLIDS; SYSTEM; DRIVEN
英文摘要:
Focal spot effects on the generation of proton beams are investigated by a high-intensity high-contrast laser irradiating on solid foil in target normal sheath acceleration experiments. Different spot size, transverse shape, and intensity of the laser are obtained by appropriately using deformable mirrors and parabolic mirrors. Experiments show that the maximum proton energy is mainly determined by the laser intensity if the focal spot size is not seriously changed. Compared with the previous experimental results, the optimum foil thickness d(o) is scaled by the laser intensity I as d(o) similar to I-0.33. The corresponding theoretical estimation is carried out as d(o) similar to I-0.25 for ultra-high intensity laser systems with similar contrast. MULTI and particle-in-cell simulations are used to interpret the experimental results.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1088/0741-3335/58/2/025010


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