钻石压砧细胞在 4 Mbar 下的行为。
Diamond anvil cell behavior up to 4 Mbar.
机构信息
Center for High Pressure Science and Technology Advanced Research, 201203 Shanghai, China;
Center for the Study of Matter at Extreme Conditions, Florida International University, Miami, FL 33199.
出版信息
Proc Natl Acad Sci U S A. 2018 Feb 20;115(8):1713-1717. doi: 10.1073/pnas.1721425115. Epub 2018 Feb 5.
Abstract
The diamond anvil cell (DAC) is considered one of the dominant devices to generate ultrahigh static pressure. The development of the DAC technique has enabled researchers to explore rich high-pressure science in the multimegabar pressure range. Here, we investigated the behavior of the DAC up to 400 GPa, which is the accepted pressure limit of a conventional DAC. By using a submicrometer synchrotron X-ray beam, double cuppings of the beveled diamond anvils were observed experimentally. Details of pressure loading, distribution, gasket-thickness variation, and diamond anvil deformation were studied to understand the generation of ultrahigh pressures, which may improve the conventional DAC techniques.
摘要
金刚石对顶砧（DAC）被认为是产生超高静压力的主要设备之一。DAC 技术的发展使研究人员能够在多兆巴压力范围内探索丰富的高压科学。在这里，我们研究了 DAC 在 400GPa 以内的性能，这是传统 DAC 的公认压力极限。通过使用亚微米同步加速器 X 射线束，我们实验观察到了斜切金刚石压砧的双杯状凹陷。研究了压力加载、分布、垫片厚度变化和金刚石砧变形的细节，以了解超高压的产生，这可能会改进传统的 DAC 技术。
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