We present a systematic approach how to characterize the dynamics of a laser-produced Au plasma, generated with a commercial Joule-class laser system. By means of our diagnostic methods, we identify the dominant ionic species within the water-window spectral region, as well as the radiated energy, the x-ray emission duration and the total dimensions of the x-ray source. We present additional analysis through radiation hydrodynamic simulations to provide details about the electron temperature and density profiles and further show that the plasma exhibits nearly 20% self-absorption, while the electron temperature is limited to 400 eV. A comparison with the experimental data further allows us to verify the applied numerical code.

我们提出了一种系统化的方法，该方法如何表征由商业焦耳级激光系统产生的激光产生的金等离子体的动力学。通过我们的诊断方法，我们可以确定水窗光谱区域内的主要离子种类，以及辐射能，X射线发射持续时间和X射线源的总尺寸。我们通过辐射流体动力学模拟提供了额外的分析，以提供有关电子温度和密度分布的详细信息，并进一步显示等离子体显示出近20％的自吸收，而电子温度限制在400 eV。与实验数据的比较进一步使我们能够验证所应用的数字代码。