论文标题
基于通道的固体目标，在纳米尺度生成中，质子光束紧密的质子束在半径
Tight focusing proton beam with radius in nanometer scale generation based on channeled solid target
论文作者
论文摘要
提出了一种在纳米尺度上产生半径为半径的超紧密浓缩质子束的有效方案。基于多维粒子中的粒子（PIC）模拟，获得了纳米尺度的横向大小的横向大小的必需质子丝。该机制是通过激光照射在具有预通密度曲线的固体靶标上实现的。理论分析提到，横向电场将偶极子偶极子急剧转移到双偶极子结构，随着初始目标密度分布从均匀到预通道的变化。电场的内部偶极子将质子束紧密聚焦到纳米仪的数量级。 3D模拟在现实条件下验证该方案。包括线性，抛物线和任意浸泡在内的各种预杂志的密度曲线可在实验中宣布该方案的鲁棒性和性能。
An efficient scheme of generating ultra-tightly focused proton bunch with radius in nanometer scale is proposed. A needlelike proton filament of transverse size in nanometer scale with the density of and charge quantity is obtained based on multi-dimension Particle-in-Cell (PIC) simulations. The regime is achieved via laser irradiating on a solid target with pre-channeled density profile. The theoretical analysis mentions that the transverse electric field dramatically transits from a defocusing dipole to double dipoles structure with the change of the initial target density distribution from uniform to pre-channeled. The inner dipole of the electric field tightly focuses the proton beam into the order of magnitude of nanometer. 3D simulations verify the scheme in the realistic condition. Various pre-channeled density profiles including linear, parabolic and arbitrary steeped prove to work well for the regime, which declares the robustness and the performability of the scheme in experiment.
