摘要
利用金刚石压腔装置测量了高压下石膏中S—O键的4种振动模式和结晶水中羟基伸缩振动Raman位移，研究结果表明：在常温（25℃）和100-800MPa压力范围内，石膏中S-O键的Raman谱峰的位移随压力的增加而向高波数方向移动，结晶水中羟基的两个伸缩谱峰随着压力的增加而向低波数方向移动，同时得到了各个谱峰与压力之间的关系式，其中结晶水中羟基的两个伸缩谱峰的dv／dp值有较大不同，是由于结晶水中合有两个强度不同的氢键所致。
This paper measures the Raman peak displacements of the four vibration modes of S-O bonding and the hydroxyl-stretching vibration modes in the gypsum at high pressures using diamond anvil cell. The experimental results show that at the temperature of 25℃ and the pressure of 100～800 MPa the Raman peak positions of the S-O bonding in the gysum shift to high wave numbers with the increase of the system pressure,while the Raman peak positions of hydroxyl-stretching vibrations shift to low wave numbers with the increase of the system pressure. The relations between the Raman peak positions and system pressure were obtained,and the two dv/dp values of hydroxyl-stretching vibrations show a great difference because of different intensity of the hydrogen bonding.
出处
《高压物理学报》
EI
CAS
CSCD
北大核心
2006年第1期25-28,共4页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金(1029904040173019)
