A nano-polycrystalline diamond anvil cell with bulk metallic glass cylinder for single-crystal neutron diffraction
A nano-polycrystalline diamond anvil cell with bulk metallic glass cylinder for single-crystal neutron diffraction
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用于单晶中子衍射的带有块体金属玻璃圆柱的纳米多晶金刚石砧池
DOI：
10.1080/08957959.2019.1700980
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发表时间：
2019
影响因子：
2
通讯作者：
Kagi Hiroyuki
中科院分区：
文献类型：
--
作者：
Yamashita Keishiro;Komatsu Kazuki;Klotz Stefan;Fernandez-Diaz Maria T.;Fabelo Oscar;Irifune Tetsuo;Sugiyama Kazumasa;Kawamata Tooru;Kagi Hiroyuki
研制了一种用于原位单晶中子衍射的高压电池。该电池在由大块金属玻璃制成的管状负载框架中使用纳米多晶金刚石砧，这种金属玻璃对中子高度透明，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，并且电池的简单几何形状允许精确的衰减校正。我们在laue - langevin研究所的D9衍射仪上用单晶NaCl进行了常压实验。在2.35 GPa高压条件下，对单晶进行了高压实验，显示了检测弱衍射点的潜力。弱反射的正确积分和简单的衰减校正将有助于利用中子衍射进行精确的结构分析和解决新的科学问题。
A high-pressure cell forin-situsingle-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.