A large-volume high-pressure and high-temperature apparatus for in situ X-ray observation, 'SPEED-Mk.II'
A large-volume high-pressure and high-temperature apparatus for in situ X-ray observation, 'SPEED-Mk.II'
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DOI：
10.1016/j.pepi.2003.07.025
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发表时间：
2004-06-15
影响因子：
2.3
通讯作者：
Utsumi, W
中科院分区：
文献类型：
--
作者：
Katsura, T;Funakoshi, K;Utsumi, W
介绍了SPEED - Mk.II，这是第二台川井型高压高温原位X射线观测装置，安装在日本SPring - 8同步辐射装置的弯铁束线站。导向块系统经过设计，通过反复调整，可使立方压缩空间的相对尺寸随压力负载的变化最小化。液压系统的设计使其能够平稳地压缩和减压。这些精确的控制对于高压产生是有利的，特别是在使用烧结金刚石（SD）压砧时。在大腔体压机中首次配备了振荡系统，即使样品颗粒数量有限，也能够获得高质量的衍射图案。振荡系统的使用还减少了压力测定中的误差，这种误差可能是由于在有限的衍射体积内颗粒衍射角平均不足引起的，因为振荡的颗粒应该会扫过光学狭缝有限宽度所允许的2θ范围。（C）2004爱思唯尔有限公司。保留所有权利。
SPEED-Mk.II, the second KAWAI-type high P-T apparatus for in situ X-ray observation that was installed at the bending magnet beam line at SPring-8, is described. The guide block system was designed so that the change of the relative dimension of the cubic compression space with press load can be minimized by repeated adjustments. The hydraulic system was designed so as to enable smooth compression and decompression. These precise controls should be advantageous for high-pressure Generation. especially when sintered diamond (SD) anvils are used. An oscillation system was equipped for the first time in a large volume press, making it possible to obtain high-quality diffraction patterns even when the number of sample grains is limited. The use of the oscillation system also reduces errors in pressure determination that may be caused by insufficient averaging of diffraction angles over grains in a limited diffraction volume, because the oscillating grains should sweep through the 20 range that is allowed by the finite widths of the optical slits. (C) 2004 Elsevier B.V. All rights reserved.