This paper presents two-dimensional hydrodynamic simulations of implosion of a water sample, which is enclosed in a cylindrical shell of tungsten that is driven by an intense uranium beam. The considered beam parameters match the characteristics of the beam which will be delivered by the heavy ion synchrotron, SIS100, at the Facility for Antiprotons and Ion Research (FAIR). An experimental scheme based on this concept, which is named LAPLAS, is an important part of the high energy density physics research program at FAIR. The simulations show that the LAPLAS implosion leads to a low-entropy compression of water, which generates core conditions of water-rich planets. The importance of this work is underscored by the fact that more than 30% of the discovered extrasolar planets are Neptune-like water-rich planets. To be able to construct a reliable physical model of the formation and evolution of these planets, it is important to have correct understanding of the equation of state of the exotic states of water that exist in the planetary interior. It is thus expected that the knowledge obtained from the LAPLAS experiments will be a very valuable contribution to the field of planetary physics. We show that x-ray radiographic imaging using a high-intensity laser-driven hard x-ray source would be a suitable diagnostic capable of delivering high-resolution images of the hydrodynamic evolution.

中文翻译：

---

会场上使用强离子束在实验室中生产温暖的浓水：在行星物理学中的应用

本文介绍了水样内爆的二维流体动力学模拟，水样被封闭在由强铀束驱动的钨圆柱壳中。所考虑的束参数与将由重离子同步加速器SIS100在反质子和离子研究设施（FAIR）上传递的束的特性相匹配。基于此概念的实验方案称为LAPLAS，是FAIR高能密度物理研究计划的重要组成部分。仿真表明，LAPLAS内爆导致水的低熵压缩，从而产生了富水行星的核心条件。事实证明，这项工作的重要性在于，超过30％的被发现的太阳系外行星是海王星般富含水的行星。为了能够构建这些行星的形成和演化的可靠物理模型，重要的是要正确理解行星内部存在的水的外来状态的状态方程。因此，可以预期的是，从LAPLAS实验中获得的知识将对行星物理学领域做出非常宝贵的贡献。我们表明，使用高强度激光驱动的硬X射线源进行X射线射线照相成像将是一种能够提供高分辨率流体动力学演化图像的合适诊断方法。因此，可以预期的是，从LAPLAS实验中获得的知识将对行星物理学领域做出非常宝贵的贡献。我们表明，使用高强度激光驱动的硬X射线源进行X射线射线照相成像将是一种能够提供高分辨率流体动力学演化图像的合适诊断方法。因此，可以预期的是，从LAPLAS实验中获得的知识将对行星物理学领域做出非常宝贵的贡献。我们表明，使用高强度激光驱动的硬X射线源进行X射线射线照相成像将是一种能够提供高分辨率流体动力学演化图像的合适诊断方法。