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Studying planetary matter using intense x-ray pulses

机译:使用强X射线脉冲研究行星物质

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摘要

Free-electron laser facilities enable new applications in the field of high-pressure research including planetary materials. The European x-ray Free Electron Laser (European XFEL) in Hamburg, Germany will start user operation in 2017 and will provide photon energies of up to 25 keV. The high-energy density science instrument (HED) is one of the six baseline instruments at the European XFEL. It is dedicated to the study of dense material at strong excitation in a temperature range from eV to keV and pressures > 100 GPa which is equivalent to an energy density > 100 J mm(-3). It will enable studying structural and electronic properties of excited states with hard x-rays. The instrument is currently in its technical design phase and first user experiments are foreseen for summer 2017. In this contribution, we present the x-ray instrumentation and foreseen x-ray techniques at HED and concentrate on prototype hard-condensed matter experiments in the field of planetary research as proposed during recent user consortium meetings for this instrument. These include quasi-isentropic (ramped) compression and shock compression experiments.
机译:自由电子激光设备在包括行星材料在内的高压研究领域实现了新的应用。位于德国汉堡的欧洲X射线自由电子激光(European XFEL)将于2017年开始用户使用,并将提供高达25 keV的光子能量。高能密度科学仪器(HED)是欧洲XFEL的六种基准仪器之一。它致力于研究在eV到keV的温度范围内且压力大于100 GPa(相当于能量密度大于100 J mm(-3))的强激发下的致密材料。这将使人们能够用硬X射线研究激发态的结构和电子性质。该仪器目前处于技术设计阶段,预计将于2017年夏季进行首次用户实验。在此贡献中,我们介绍了HED的X射线仪器和可预见的X射线技术,并专注于该领域的原型硬凝物实验最近的用户联盟会议上针对该仪器提出的行星研究报告。这些包括准等熵(倾斜)压缩和冲击压缩实验。

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