Neutron diffraction at simultaneous high temperatures and pressures, with measurement of temperature by neutron radiography
Neutron diffraction at simultaneous high temperatures and pressures, with measurement of temperature by neutron radiography
复制标题
DOI：
10.1180/0026461016560005
复制
发表时间：
2001-12
影响因子：
2.7
通讯作者：
Y. Godec;M. Dove;D. Francis;S. Kohn;W. G. Marshall;A. Pawley;G. D. Price;S. Redfern;N. Rhodes;N. Ross;P. Schofield;E. Schooneveld;G. Syfosse;M. Tucker;M. D. Welch
中科院分区：
文献类型：
--
作者：
Y. Godec;M. Dove;D. Francis;S. Kohn;W. G. Marshall;A. Pawley;G. D. Price;S. Redfern;N. Rhodes;N. Ross;P. Schofield;E. Schooneveld;G. Syfosse;M. Tucker;M. D. Welch
本文报道了高温高压中子衍射装置的调试和运行情况。基本设计是基于巴黎-爱丁堡单元使用相对的砧，内部加热。使用中子射线照相术测量温度。该装置已在在线和离线测试中显示出在7 GPa的压力和1700°C的温度下操作。该装置已用于氘水镁石晶体结构的中子衍射研究，给出了520°C和5.15GPa下的结果。衍射数据，可以从该设备获得的质量与以前的高压研究在环境温度下，显然是足够好的Rietveld细化分析，以提供合理的质量的结构数据。
Abstract The commissioning and operation of apparatus for neutron diffraction at simultaneous high temperatures and pressures is reported. The basic design is based on the Paris-Edinburgh cell using opposed anvils, with internal heating. Temperature is measured using neutron radiography. The apparatus has been shown in both on-line and off-line tests to operate to a pressure of 7 GPa and temperature of 1700°C. The apparatus has been used in a neutron diffraction study of the crystal structure of deuterated brucite, and results for 520°C and 5.15 GPa are presented. The diffraction data that can be obtained from the apparatus are of comparable quality to previous high-pressure studies at ambient temperatures, and are clearly good enough for Rietveld refinement analysis to give structural data of reasonable quality.