Duan Ti-yu, Sun Qiang, Zheng Hai-fei
School of Earth and Space Science, Peking University, Beijing 100871, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2005 Jun;25(6):902-5.
This paper introduces the structure and the feature of moissanite anvil cell, which is composed of moissanite anvil, supporting and creating pressure system, heater system and metal gasket. Because of its high hardness, high heat conductance, low thermal expansion, good thermal stability and low price, moissanite is a good material of anvil for high-temperature and high-pressure experimental studies. With this cell, the Raman spectrum of sodium carbonate solution, sodium sulfate solution and distilled water has been in situ measured under high-temperature and high-pressure. With increasing pressure, it can be observed that the 1066 cm(-1) Raman modes of sodium carbonate solution and the 982 cm(-1) Raman modes of sodium sulfate solution shift to high wave numbers obviously. With increasing temperature, the frequency at maximum intensity shifts to high wave numbers, the full width at half-maximum intensity decreases in the Raman spectrum of water.
本文介绍了碳硅石压砧池的结构和特点，它由碳硅石压砧、支撑与产生压力系统、加热系统和金属垫片组成。由于碳硅石具有高硬度、高导热性、低热膨胀、良好的热稳定性和低价格，它是用于高温高压实验研究的优良压砧材料。利用该压砧池，原位测量了碳酸钠溶液、硫酸钠溶液和蒸馏水在高温高压下的拉曼光谱。随着压力增加，可以观察到碳酸钠溶液的1066 cm⁻¹拉曼模式和硫酸钠溶液的982 cm⁻¹拉曼模式明显向高波数移动。随着温度升高，水的拉曼光谱中强度最大值处的频率向高波数移动，半高宽减小。
