Multianvil high pressure system using single crystalline diamond anvils

我们研制了一种多砧高压装置，利用该装置可以进行光学原位缝合。该高压系统由30吨单轴压力机、小导向块、硬质合金外顶砧和单晶金刚石或单晶蓝宝石内顶砧组成。为了驱动金刚石或蓝宝石多砧，我们采用了DIA型立方体导向块系统。导向块中的顶砧由碳化钨制成，由固定在上、下导向块中的两个H顶砧和四个垂直于H顶砧的V顶砧组成。砧头由单晶金刚石或蓝宝石制成，用作原位光学测量的窗口。将现有的高压系统与微型拉曼光谱仪相结合，可以实现高压下的拉曼光谱测量。利用该系统测量了硅和红宝石的高压拉曼光谱。

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.