Review: high pressure generation techniques beyond the limit of conventional diamond anvils
Review: high pressure generation techniques beyond the limit of conventional diamond anvils
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回顾：超越传统金刚石砧极限的高压产生技术
DOI：
10.1080/08957959.2019.1704753
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发表时间：
2019
影响因子：
2
通讯作者：
Irifune Tetsuo
中科院分区：
文献类型：
--
作者：
Yagi Takehiko;Sakai Takeshi;Kadobayashi Hirokazu;Irifune Tetsuo
本文综述了目前金刚石对顶砧的设计和在产生超常规金刚石对顶砧（DAC）极限（~ 400 GPa）的静态高压方面所作的各种努力。一个研究小组使用双级DAC（ds-DAC）技术报告了高达1 TPa的压力，但没有其他研究小组成功复制了这种高压结果。一些研究小组已经使用了环形砧，实现了>400 GPa的压力。 我们已经进行了大量的ds-DAC实验，并研究了与这些实验相关的问题。它们包括与多兆巴区域中的各种压力尺度相关的问题，从微米尺寸的样品中获得可靠的X射线衍射图案的困难，以及可能比金刚石更硬的微小材料的物理特性测量。这些问题中的每一个都进行了讨论，以下各种实验的总结。
Current anvil designs and problems associated with various efforts to generate static high pressures beyond the limit of conventional diamond anvil cells (DACs) (∼400 GPa) are reviewed. Pressures of up to 1 TPa have been reported by one research group using the double-stage DAC (ds-DAC) technique, but no other research group has successfully reproduced this high pressure result. Some research groups have used toroidal anvils, achieving pressures of >400 GPa. We have conducted numerous ds-DAC experiments and investigated the problems associated with such experiments. They include problems associated with various pressure scales in the multi-megabar region, difficulties in obtaining reliable X-ray diffraction patterns from micron-sized samples, and physical property measurements of tiny materials that may be harder than diamond. Each of these problems is discussed, following the summary of various experiments.