Femtosecond-Scale Time Resolved Measurements of Intense Laser-Plasma Interactions

强激光-等离子体相互作用的飞秒级时间分辨测量

• 批准号: 1811677
• 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: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1811677
• 关键词: Femtosecond; Scale; Time; Resolved; Measurements

Research into intense laser-plasma interactions has over the past 15 years, resulted in the development of compact and intense sources of high energy electrons, protons, heavy ions, neutrons and gamma-rays. Applications for these new sources include medical imaging, ion oncology and inertial confinement fusion. Making these applications a reality however will require a deeper understanding of the underlying ultrafast dynamics of the intense laser-plasma interactions. To date, time-resolved measurements of these dynamics, on femtosecond time scales, have eluded researchers. With this project we propose to develop, for the first time, a high-energy, short-pulse source of supercontinuum light using both national and international high-power laser facilities as well as the newly developed SCAPA facility based at Strathclyde. This intense source of supercontinuum light will enable the first femtosecond scale, multi-timeframe optical probing of intense laser-plasma interactions. The aim of this PhD studentship is to: (1) Contribute to the design, modelling and experimental development of the supercontinuum probe. (2) Contribute to a broader experimental program investigating the underlying physics of laser-plasma interactions and their applications. (3) Contribute to the first temporally resolved laser-plasma experiments using the high energy supercontinuum optical probe technique.

在过去的15年里，对强激光-等离子体相互作用的研究导致了高能量电子、质子、重离子、中子和伽马射线的紧凑和强烈来源的发展。这些新来源的应用包括医学成像、离子肿瘤学和惯性约束聚变。然而，要使这些应用成为现实，将需要更深入地理解强烈激光-等离子体相互作用的潜在超快动力学。到目前为止，这些动力学的时间分辨测量，在飞秒时间尺度上，一直是研究人员所不能理解的。通过这个项目，我们计划首次开发一种高能量、短脉冲的超连续谱光源，使用国内和国际的高功率激光设备以及位于Strathclyde的新开发的Scapa设施。这种强烈的超连续谱光源将使第一次飞秒尺度、多时间帧的强烈激光与等离子体相互作用的光学探测成为可能。这个博士生的目标是：(1)为超连续谱探测器的设计、建模和实验发展做出贡献。(2)促进更广泛的实验计划，研究激光-等离子体相互作用的基本物理及其应用。(3)首次利用高能超连续谱光学探测技术进行了激光等离子体时间分辨实验。

项目成果

Bremsstrahlung emission from high power laser interactions with constrained targets for industrial radiography

• DOI: 10.1017/hpl.2019.8
• 发表时间: 2019-04
• 期刊: High Power Laser Science and Engineering
• 影响因子: 4.8
• 作者: C. Armstrong;C. Brenner;C. Jones;D. Rusby;Z. Davidson;Y. Zhang;J. Wragg;S. Richards;C. Spindloe