论文标题
在激光 - 血浆放大器中观察到的热血浆的非线性电离动力学
Nonlinear Ionization Dynamics of Hot Dense Plasma Observed in a Laser-Plasma Amplifier
论文作者
论文摘要
从恒星中的融合动力学到陆地闪电事件，再到能源生产的新前景或新型光源，热量密集的等离子体对于一系列物理现象至关重要。由于高度激发物质中的相关性有很多相关性，因此直接探测孤立的动力学仍然具有挑战性。在这里，使用八倍离子化的krypton作为增益培养基的高谐音种子激光 - 血质放大器（LPA）的32.8 nm发射是在极端紫外线（XUV）的纵向上沿纵向成像的。与从头静脉时空的麦克斯韦模拟相吻合，观察到了由于非线性激光 - 铂相互作用而对K的kention量。这构成了重塑激光等离子体放大器的激光离子丰度的第一个实验观察。这些发现对基于血浆的XUV和X射线源具有直接影响，并允许在极端条件下建模光 - 型相互作用，类似于宇宙的早期时代，并进行了直接的实验验证。
From fusion dynamics in stars, to terrestrial lightning events, to new prospects of energy production or novel light sources, hot dense plasmas are of importance for an array of physical phenomena. Due to a plethora of correlations in highly excited matter, direct probing of isolated dynamics remains challenging. Here, the 32.8-nm emission of a high-harmonic seeded laser-plasma amplifier (LPA), using eight-fold ionized Krypton as gain medium, is ptychographically imaged in longitudinal direction in the extreme ultraviolet (XUV). In excellent agreement with ab initio spatio-temporal Maxwell-Bloch simulations, an overionization of krypton due to nonlinear laser-plasma interactions is observed. This constitutes the first experimental observation of the laser ion abundance reshaping a laser plasma amplifier. The findings have direct implications for upscaling plasma-based XUV and X-ray sources and allow modeling light-plasma interactions in extreme conditions, similar to those of the early times of the universe, with direct experimental verification.
