ABSTRACT A high-pressure cell for in-situ single-crystal neutron diffraction was developed. The cell uses nano-polycrystalline diamond anvils in a tubular load frame made of bulk metallic glass which is highly transparent to neutrons and does not produce Bragg reflections. Diffraction peaks from a sample can be measured from almost any direction and the simple geometry of the cell allows accurate attenuation corrections. We demonstrate the operation of the cell by ambient-pressure experiment using a single-crystal of NaCl on the D9 diffractometer at the Institute-Laue-Langevin. A high-pressure experiment was also carried out on a single crystal of ice VII at 2.35 GPa showing the potential to detect weak diffraction spots. The correct integration of weak reflections together with the simple attenuation correction will help to carry out precise structure analysis and address new scientific problems using neutron diffraction.

中文翻译：

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用于单晶中子衍射的具有块状金属玻璃圆柱体的纳米多晶金刚石砧座

摘要 研制了一种用于原位单晶中子衍射的高压室。该电池在管状负载框架中使用纳米多晶金刚石砧，该框架由块状金属玻璃制成，对中子高度透明，不会产生布拉格反射。样品的衍射峰几乎可以从任何方向测量，而且样品池的简单几何形状可以进行精确的衰减校正。我们在劳厄-朗之万研究所的 D9 衍射仪上使用 NaCl 单晶，通过环境压力实验演示了电池的操作。还在 2.35 GPa 的单晶冰 VII 上进行了高压实验，显示了检测弱衍射点的潜力。