标题： 磁化等离子体透镜的激光脉冲聚焦和高能电子生成 显示英文标题

标题： Laser pulse focusing and energetic electron generation by magnetized plasma lens

摘要： 一种高效的激光脉冲聚焦机制，借助于在非均匀磁场中浸入的弱等离子体靶的形状实现，已被证明。 这些研究是借助于2-D粒子-网格（PIC）模拟进行的，采用了OSIRIS 4.0平台。 结果表明，发散的磁场轮廓在横向方向上压缩了电磁波脉冲。 还进行了平面和透镜形状等离子体几何结构的比较研究，以找到在期望位置聚焦激光的最佳配置。 此外，还证明了当电子回旋共振（ECR）层放置在激光聚焦的适当位置时，会产生高能电子束。 显示英文摘要

摘要： An efficient mechanism of laser pulse focusing with the help of shaped underdense plasma target immersed in inhomogeneous magnetic field has been demonstrated. These studies have been carried out with the help of 2-D Particle-In-Cell (PIC) simulation employing the OSIRIS 4.0 platform. It is shown that the divergent magnetic field profile compresses the EM wave pulse in the transverse direction. A comparative investigation with plane and lens shaped plasma geometries has also been conducted to find an optimal configuration for focusing the laser at the desirable location. Furthermore, it is also demonstrated that when the electron cyclotron resonance (ECR) layer is placed at a suitable location where the laser is focused, a highly energetic electron beam gets generated.