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Physics of the laser-plasma interface in the relativistic regime of interaction

机译：相互作用的激光等离子体界面的物理学

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摘要

The reflection of intense laser radiation from solids appears as a result of relativistic dynamics of the electrons driven by both incoming and self-generated electromagnetic fields at the periphery of the emerging dense plasma. In the case of highly relativistic motion, electrons tend to form a thin oscillating layer, which makes it possible to model the interaction and obtain the temporal structure of the reflected radiation. The modeling reveals the possibility and conditions for producing singularly intense and short extreme ultraviolet (XUV) bursts of radiation, which are interesting for many applications. However, the intensity and duration of the XUV bursts, as well as the high-energy end of the harmonic spectrum, depend on the thickness of the layer and its internal structure which are not assessed by such macroscopic modeling. Here, we analyze the microscopic physics of this layer and clarify how its parameters are bound and how this controls the outlined properties of XUV bursts. Published under license by AIP Publishing.
机译：由于在出现的致密等离子体周边处的进入和自发电电磁场驱动的电子驱动的电子的相对论动力学，出现来自固体的强烈激光辐射的反射。在高度相对论运动的情况下，电子倾向于形成薄的振荡层，这使得可以模拟相互作用并获得反射辐射的时间结构。该模型揭示了产生奇异和短的极端紫外线（XUV）辐射爆发的可能性和条件，这对许多应用有趣。然而，XUV突发的强度和持续时间以及谐波谱的高能量结束取决于层的厚度及其内部结构，其不通过这种宏观造型评估。在这里，我们分析了该层的微观物理，并阐明了其参数的绑定方式以及如何控制XUV突发的概述的属性。通过AIP发布在许可证下发布。

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