Laser mode effects on the ion acceleration during circularly polarized laser pulse interaction with foil targets

被引:91
作者
Chen, M. [1 ]
Pukhov, A. [1 ]
Sheng, Z. M. [2 ,3 ]
Yan, X. Q. [4 ]
机构
[1] Univ Dusseldorf, Inst Theoret Phys 1, D-40225 Dusseldorf, Germany
[2] Chinese Acad Sci, Inst Phys, Lab Opt Phys, Beijing 100080, Peoples R China
[3] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China
[4] Max Planck Inst Quantum Opt, D-85748 Garching, Germany
基金
中国国家自然科学基金;
关键词
plasma instability; plasma light propagation; plasma simulation;
D O I
10.1063/1.3019105
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
Ion acceleration by circularly polarized laser pulses interacting with foil targets is studied using two dimensional particle-in-cell simulations. It is shown that laser pulses with transverse super-Gaussian profile help in avoiding target deformation as compared with the usual Gaussian pulse. This improves monochromaticity of the accelerated ion spectrum. Two kinds of surface instabilities have been found during the interaction. These instabilities can potentially break the target and destroy the quasimonoenergetic character of the final ion spectrum. Combined laser pulses with super-Hermite and Gaussian modes are used to improve the ion acceleration and transverse collimation.
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页数:5
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