Theoretical and numerical investigation of collective effects in extreme laser-plasma interaction

极端激光-等离子体相互作用中集体效应的理论和数值研究

• 批准号: EP/P007082/1
• 负责人: Remi Capdessus
• 金额: $ 34.26万
• 依托单位: University of Strathclyde
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FP007082%2F1
• 关键词: Theoretical; numerical; investigation; collective; effects

The proposed research project focuses on theoretical and numerical investigations of the physics of laser-matter interaction at ultra-high laser intensities, in the range 10^22-10^24 W/cm^2. These intensities will soon be achievable at multi-petawatt laser facilities, such as the 800MEuro extreme light infrastructure (ELI) and APOLLON-10P. These facilities will enable the exploration of new fundamental physical processes such as radiation reaction, relativistic electron dynamics, electron-positron pair production and the generation of relativistic ions. Electrons produce significant synchrotron radiation at laser intensities above 10^22 W/cm^2 giving rise to the radiation reaction force that strongly affects the photon emission spectrum and the overall plasma dynamics. Due to the intense electromagnetic fields involved, quantum effects will become important for laser intensities above 10^23W/cm^2, resulting in the production of copious amounts of electron-positron pairs. My proposal aims to explore the underpinning physics of these proposes theoretically and numerically. The results will be used to guide the design and interpretation of related experiments using these new ultraintense laser systems.The proposed research project opens up new directions in ultra-relativistic plasmas that are subject to quantum electrodynamics (QED) processes. For example, to date, the role of the plasma ions on the high energy synchrotron radiation and electron-positron pair production, is poorly understood and has never been explored experimentally. It is often suggested that the interaction of a short laser pulse with plasmas is dominated by the electron dynamics and that the ions play a secondary role due to the longer timescales over which they react. Although this may be true for lower laser intensities, the situation becomes more complicated in the case of ultra-relativistic laser pulses for which the quiver electron energy could be comparable with the ion rest mass. The collective effects driven by the ion response will be investigated in both semi-classical plasmas and quantum plasmas. A kinetic theory of laser energy absorption accounting for ion response will be developed over this proposed research project. Future experiments, which will test the predictions of the theory and simulations, will also be designed.The project involves collaboration with a number of leading researchers in high field laser-plasma interaction physics, both in the UK and in Europe. It also involves a close collaboration with an experimental team at the University of Strathclyde and with the ELI-NP high field science working group.

这项研究计划集中在超高激光强度下激光与物质相互作用物理的理论和数值研究。这些激光强度在10^22-10^24 W/cm^2范围内。这些强度将很快在几个拍瓦的激光设施上实现，例如800MEuro极光基础设施(ELI)和Apollon-10P。这些设施将使探索新的基本物理过程成为可能，例如辐射反应、相对论电子动力学、电子-正电子对的产生和相对论离子的产生。当激光强度大于1022W/cm2时，电子产生显著的同步辐射，产生辐射反作用力，对光子发射光谱和整个等离子体动力学产生强烈影响。由于涉及到强烈的电磁场，量子效应对于高于1023W/cm~2的激光强度将变得非常重要，从而产生大量的电子-正电子对。我的提议旨在从理论和数值上探索这些提议的物理基础。这些结果将用于指导使用这些新的超强激光系统的相关实验的设计和解释。拟议的研究项目为受量子电动力学(QED)过程影响的超相对论等离子体开辟了新的方向。例如，到目前为止，等离子体离子在高能同步辐射和电子-正电子对产生中的作用，人们知之甚少，也从未进行过实验探索。人们经常认为，短激光脉冲与等离子体的相互作用是由电子动力学控制的，离子起次要作用，因为它们在较长的时间尺度上反应。尽管对于较低的激光强度来说这可能是正确的，但对于电子颤动能量可以与离子静止质量相当的超相对论激光脉冲来说，情况变得更加复杂。由离子响应驱动的集体效应将在半经典等离子体和量子等离子体中进行研究。在这项拟议的研究项目中，将发展一个考虑离子响应的激光能量吸收的动力学理论。未来的实验也将被设计出来，这些实验将检验理论和模拟的预测。该项目涉及与英国和欧洲的一些高场激光-等离子体相互作用物理领域的领先研究人员合作。它还涉及与斯特拉斯克莱德大学的一个实验小组以及ELI-NP高场科学工作组的密切合作。

项目成果

Radiation Pressure-Driven Plasma Surface Dynamics in Ultra-Intense Laser Pulse Interactions with Ultra-Thin Foils

超强激光脉冲与超薄箔相互作用中的辐射压力驱动等离子体表面动力学

• DOI: 10.3390/app8030336
• 发表时间: 2018
• 期刊: Applied Sciences
• 作者: Gonzalez-Izquierdo B

Efficient ion acceleration and dense electron-positron plasma creation in ultra-high intensity laser-solid interactions

• DOI: 10.1088/1367-2630/aaae61
• 发表时间: 2018-03-26
• 期刊: NEW JOURNAL OF PHYSICS
• 影响因子: 3.3
• 作者: Del Sorbo, D.;Blackman, D. R.;Ridgers, C. P.
• 通讯作者: Ridgers, C. P.

Near-100 MeV protons via a laser-driven transparency-enhanced hybrid acceleration scheme.

• DOI: 10.1038/s41467-018-03063-9
• 发表时间: 2018-02-20
• 期刊: Nature communications
• 影响因子: 16.6
• 作者: Higginson A;Gray RJ;King M;Dance RJ;Williamson SDR;Butler NMH;Wilson R;Capdessus R;Armstrong C;Green JS;Hawkes SJ;Martin P;Wei WQ;Mirfayzi SR;Yuan XH;Kar S;Borghesi M;Clarke RJ;Neely D;McKenna P
• 通讯作者: McKenna P

Modelling the effects of the radiation reaction force on the interaction of thin foils with ultra-intense laser fields

• DOI: 10.1088/1361-6587/aab97d
• 发表时间: 2018-03
• 期刊: Plasma Physics and Controlled Fusion
• 影响因子: 2.2
• 作者: M. Duff;R. Capdessus;D. Sorbo;C. Ridgers;M. King;P. McKenna