Proton Acceleration due to Anisotropic Coulomb Explosion of a Double-Layer Target Irradiated by an Intense Laser Pulse
Proton Acceleration due to Anisotropic Coulomb Explosion of a Double-Layer Target Irradiated by an Intense Laser Pulse
复制标题
强激光脉冲照射双层靶材各向异性库仑爆炸引起的质子加速
DOI：
10.1143/jpsj.81.024501
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发表时间：
2012
影响因子：
1.7
通讯作者：
M. Kando
中科院分区：
文献类型：
--
作者：
T.Morita;S.V.Bulanov;T.Zh.Esirkepov;J. Koga;M. Kando
用三维粒子模拟方法研究了100 TW激光脉冲辐照双层靶对离子的加速。对于一个足够高的离子电荷质量比在第一层的目标，强烈的不均匀膨胀的第一层发生由于其库仑爆炸和发病的辐射压力占主导地位的加速制度。不均匀膨胀的离子云的随时间变化的电势有效地加速质子。采用最佳的第一层材料和最佳的激光脉冲入射角，可以获得高能量的准单能质子束。
The ion acceleration by a hundred TW laser pulse irradiating a double-layer target is examined using three-dimensional particle-in-cell simulations. For a sufficiently high ion charge-to-mass ratio in the first layer of the target, a strongly inhomogeneous expansion of the first layer occurs due to its Coulomb explosion and the onset of the radiation pressure dominant acceleration regime. The time-varying electric potential of the inhomogeneously expanding ion cloud efficiently accelerates protons. Using the optimum material for the first layer and the optimum laser pulse incidence angle one can obtain a high-energy quasimonoenergetic proton beam.