Multianvil high pressure system using single crystalline diamond anvils

我们研制了可用于制作原位光学缝合线的多压腔高压装置。该高压系统由30吨单轴压力机、小导块、碳化钨外砧板、单晶金刚石或单晶蓝宝石内砧板组成。为了驱动钻石或蓝宝石多面顶锤，我们采用了DIA型立方导块系统。导块中的砧座由碳化钨制成，由固定在上、下导块上的两个H砧座和垂直于H砧座的四个V砧座组成。砧头由单晶金刚石或蓝宝石制成，作为原位光学测量的窗口。将现有的高压系统与显微拉曼光谱仪相结合，可以进行高压下的拉曼光谱测量。利用该系统测量了硅和红宝石在高压下的拉曼光谱。

We have developed the mulitanvil high pressure apparatus by which we can make in-situ optical sutudeies. This high pressure system is composed of 30ton uniaxial press, small guide block, outer anvils made of tungsten carbide, and inner anvils made of single crystalline diamond or single crystalline sapphire. In order to drive the diamond or sapphire multianvil, we adopted the DIA type cubic guide block system. The anvils in the guideblock are made of tungsten carbide and composed of two H anvils fixed in the upper and lower guide blocks, and four V anvils which are perpendicular to the H anvils. The anvil heads are made of single crystalline diamond or sapphire and serve as the window for the in situ optical measurements. Combining the present high pressure system and micro Raman spectrophotometer, we can make the Raman spectrum measurement at high pressure. Using this system we measured the Raman spectra of silicon and ruby at high pressure.