Diamond anvil cell behavior up to 4 Mbar
Diamond anvil cell behavior up to 4 Mbar
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DOI：
10.1073/pnas.1721425115
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发表时间：
2018-02-20
影响因子：
11.1
通讯作者：
Mao, Ho-kwang
中科院分区：
文献类型：
--
作者：
Li, Bing;Ji, Cheng;Mao, Ho-kwang
金刚石压砧是产生超静压力的主要装置之一. DAC技术的发展使研究人员能够在数兆巴压力范围内探索丰富的高压科学。在这里，我们研究了高达400 GPa的DAC的行为，这是传统DAC的公认压力极限。利用亚微米同步辐射X射线束，在实验上观察到了金刚石斜面砧的双重杯突现象。详细的压力加载，分布，垫圈厚度的变化，和金刚石砧变形进行了研究，以了解的产生的压力，这可能会改善传统的DAC技术。
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.