论文标题
对PALS激光器激光驱动的辐射冲击的相互作用的实验研究
Experimental study of the interaction of two laser-driven radiative shocks at the PALS laser
论文作者
论文摘要
辐射冲击（RS）是复杂的现象，在天体物理环境中无处不在。在受控条件下对实验室中这种高血压冲击的研究是了解物理学的主要兴趣，并检查数值模拟复制实验结果的能力。在这种情况下，我们在布拉格的Asterix激光系统设施（PALS）进行了第一个实验，该实验用于研究两种反向传播的辐射冲击，以高达25-50 km/s的高速速度在高度速度下以高于25-50 km/s的速度传播，在压力范围为0.1和0.6 bar的压力下。这些实验突出了两个辐射前体之间的相互作用。这种相互作用在质量上是定性的，但未通过一维模拟进行定量描述。还提供了通过XUV光谱法获得的初步结果，从而导致血浆的休克温度和离子电荷估计。
Radiative shocks (RS) are complex phenomena which are ubiquitous in astrophysical environments. The study of such hypersonic shocks in the laboratory, under controlled conditions, is of primary interest to understand the physics at play and also to check the ability of numerical simulations to reproduce the experimental results. In this context, we conducted, at the Prague Asterix Laser System facility (PALS), the first experiments dedicated to the study of two counter-propagating radiative shocks propagating at non-equal speeds up to 25-50 km/s in noble gases at pressures ranging between 0.1 and 0.6 bar. These experiments highlighted the interaction between the two radiative precursors. This interaction is qualitatively but not quantitatively described by 1D simulations. Preliminary results obtained with XUV spectroscopy leading to the estimation of shock temperature and ion charge of the plasma are also presented.
