Relativistic laser-plasma physics and advanced plasma optics

相对论激光等离子体物理学和先进等离子体光学

• 批准号: 2189469
• 金额: --
• 依托单位: University of Strathclyde
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2189469
• 关键词: Relativistic; laser; plasma; physics; advanced

Due to their compact nature and unique properties, intense laser-driven particle and radiation sources have transformative potential for application in many areas of science and society. Central to the development of this enabling technology is the exploitation of nonlinear optical phenomena that are produced when plasma electrons interacting with the laser gain relativistic velocities. These physical processes will dominate light-matter interactions at next-generation laser facilities, e.g. the extreme light infrastructure (ELI).The project involves a programme of experiments and coupled simulations to investigate relativistic laser-plasma interaction phenomena, and their use in controlling charged particle and radiation generation, in ultrathin foil targets irradiated by ultraintense laser pulses. It will also involve the development and application of advanced designs for plasma optics, including ellipsoidal reflective surfaces to tightly focus relativistically intense laser light. The project exploits recent breakthroughs by our team, including relativistic transparency in ultrathin foils (Nature Physics 12, 505 (2016)) and its use in manipulating plasma particle motion (Nature Communications, 7, 12891 (2016)) and acceleration physics (Nature Communications, At press (2018)). It will explore the physics underpinning the development of relativistic plasma photonics, to enable tuneable spatial, temporal and polarisation control of laser pulses at ultrahigh intensity. The project involves experimental investigations using the new 350TW SCAPA laser in Physics and external lasers at the Central Laser Facility in Oxfordshire. It also involves simulations of intense laser-plasma interactions using the ARCHER and ARCHIE-WeSt high performance computers.The objectives are:1. Investigate the influence of a relativistic plasma aperture on the properties of ultraintense laser light2. Investigate the potential to control field evolution and particle acceleration in relativistically transparent targets.

由于其紧凑的性质和独特的特性，激光驱动的粒子和辐射源具有在科学和社会许多领域应用的变革潜力。这项启用技术发展的核心是当与激光增益相对论速度相互作用时，对非线性光学现象的开发。这些物理过程将在下一代激光器设施中主导着光结合的相互作用，例如极端光基础设施（ELI）。该项目涉及一个实验和耦合模拟程序，以研究相对论的激光 - 血压相互作用现象，以及它们在超薄箔靶中在超明箔靶标中通过超纯激光脉冲辐射的超薄箔靶标中的使用。它还将涉及等离子体光学元件的高级设计的开发和应用，包括椭圆形反射表面，以紧密聚焦相对激烈的激光光。该项目利用了我们团队的最新突破，包括超薄箔中的相对论透明度（自然物理学12，505（2016））及其在操纵等离子体粒子运动（自然通信，7，12891（2016））和加速物理学（自然通信，在Press（Press（2018））中使用。它将探索基于相对论等离子体光子学发展的物理学，以使激光脉冲以超高强度对激光脉冲的可调空间，时间和极化控制。该项目涉及在牛津郡中央激光设施的物理和外部激光器中使用新的350TW SCAPA激光器进行实验研究。它还涉及使用Archer和Archie-West高性能计算机对强烈激光 - 播的模拟。目标是：1。研究相对论等离子体孔径对超轻激光灯的性能2的影响。研究在相对透明靶标中控制场演化和颗粒加速度的潜力。