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8348084 
Journal Article 
CMRR中子科学平台的高压中子衍射技术及应用 
Fang, L; Chen, X; Xie, L; He, D; Hu, Q; Li, X; Jiang, M; Sun, G; Chen, B; Peng, S; Li, H; Han, T 
2020 
Chinese Journal of High Pressure Physics 
34 
5 
Chinese 
FENGHUANG diffractometer at CMRR is a neutron diffractometer dedicated for high pressure experiments. After updating the neutron guide and monochromator, now the neutron flux at the sample position can get increased up to 2.84×106 ns-1·cm-2.Based on the FENGHUANG diffractometer, comprehensive high pressure devices and techniques have been developed, such as gas cells, piston cylinders cell, clamp cell, PE press (VX4), opposite anvil press (HP3-1500) along with sample heating and cooling system, and the alignment system for high pressure devices. Moreover, with the modified high pressure and high temperature cell assemblies, the pressure can be up to 34 GPa while the temperature reaches 1500 ℃ at maximum in the angle-dispersive neutron diffraction. Recently, some scientific research have been performed, like the solubility of NaCl at high pressure, the intergranular strain evolution of HMX, and the pressure-induced polymerization. All these experimental experiences from FENGHUANG diffractometer could not only help to promote the development of high pressure techniques on neutron scattering facilities, but also contribute to the users for their high pressure studies. © 2020, Editorial Board of Chinese Journal of High Pressure Physics. All right reserved. 
High pressure; Large-volume; Neutron diffraction; Paris-Edinburgh press