Dynamic compression experiments of rock material at free electron lasers

自由电子激光器下岩石材料的动态压缩实验

基本信息

项目摘要

With the discovery of 3200 exoplanets (by June 2019) in the past few years, the understanding of basic compositions, structure, and the dynamics of rocky planets has gained tremendous importance. In this subproject, we experimentally study rock material at conditions relevant for planetary sciences. To reach and densely cover the p-T space of up to 800 GPa and several 1000 K, we apply dynamic laser compression techniques. Besides the existing experimental facilities at SACLA and LCLS, we make use of a new experimental facility, the High-Energy Density Science (HED) instrument at the European XFEL GmbH (EuXFEL) and realize the required experimental set-up. In the first phase, this research unit subproject (SP7) as well as the two other subprojects (SP8 and SP9) using experimental techniques, study MgO and FeO as a model material. Doing so, experimental results obtained by diamond anvil cell (DAC) compression techniques are validated against those obtained from dynamic laser compression. In addition, this research unit provides a platform to quantitatively compare the experimental results with results obtained by ab initio simulation on the same model systems. This benchmarking enables to experimentally study key phases in rocky planets at relevant conditions. We propose to first obtain equation-of-state data (EoS) for MgO and FeO including their melting curves. Once these model systems are well understood, we focus later in the project on solid solutions ((Mg(1-x),FexO) which are more comparable to natural systems.
在过去的几年里,随着3200颗系外行星的发现(到2019年6月),对岩石行星的基本组成、结构和动力学的理解变得非常重要。在这个子项目中,我们在行星科学相关的条件下对岩石材料进行了实验研究。为了达到并密集覆盖高达800 GPa和几个1000 K的p-T空间,我们采用动态激光压缩技术。除了SACLA和LCLS现有的实验设施外,我们还利用了一个新的实验设施,即欧洲XFEL GmbH(EuXFEL)的高能密度科学(HED)仪器,并实现了所需的实验设置。在第一阶段,本研究单元子项目(SP7)以及另外两个子项目(SP8和SP9)使用实验技术,研究MgO和FeO作为模型材料。这样做,金刚石压砧单元(DAC)压缩技术获得的实验结果进行了验证,对那些从动态激光压缩。此外,该研究单元提供了一个平台,以定量比较实验结果与从头计算模拟相同的模型系统所获得的结果。这种基准能够在相关条件下对岩石行星的关键阶段进行实验研究。我们建议首先获得MgO和FeO的状态方程数据(EoS),包括它们的熔化曲线。一旦这些模型系统得到很好的理解,我们将在项目的后期关注固溶体((Mg(1-x),FexO),这些固溶体与自然系统更具可比性。

项目成果

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Dr. Karen Appel其他文献

Dr. Karen Appel的其他文献

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{{ truncateString('Dr. Karen Appel', 18)}}的其他基金

X-ray fluorescence and X-ray absorption spectroscopy studies of element redistribution processes between carbonates and mantle phases at lower mantle conditions
下地幔条件下碳酸盐与地幔相之间元素再分配过程的 X 射线荧光和 X 射线吸收光谱研究
  • 批准号:
    264046541
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Units
Properties of Fe-bearing geomaterials at conditions close to the core-mantle boundary
接近核幔边界条件下含铁岩土材料的特性
  • 批准号:
    521549147
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes

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