摘要
氨是为数不多具有由范德瓦尔斯力形成的分子间氢键的简单氢化物。极端条件光散射谱学在研究氨的压力-温度(P-T)相边界、测定高压融化曲线以及解析结构的过程中起到了关键作用。本文主要针对目前固态氨在高压光散射谱学方面的研究进展做了综述分析,归纳整理了目前实验上已确认的高压固态氨的拉曼声子谱图及空间结构,结合文献数据首次分析了氨在0~200 GPa,0~3000 K温压范围内较为全面的P-T相图。该工作对后续开展高压固态氨的相关实验,进一步完善其高温高压相图具有一定的参考价值。
Ammonia is one of the few simple hydridesconstituted of intermolecular hydrogen bonds formed by van der Waals forces.Extreme condition light scattering spectroscopy plays an important role in determination of high pressure-temperature phase boundary,measurement of melting curve,and analysis of space structure.This review mainly analyzed the current research progress of solid ammonia in high-pressure light scattering spectroscopy.The Raman phonon spectrum and spatial structure of solid ammonia confirmed by experiments were summarized.Combined with the literature data,a relatively comprehensive P-T phase diagram of ammonia in the temperature and pressure range of 0-200 GPa and 0-3000 K was analyzed for the first time.This work has a certain reference value for the subsequent experiment of solid ammonia at high pressure and the further complement of its high-temperature and high-pressure phase diagram.
作者
陶雨
刘静仪
吴彬彬
雷力
TAO Yu;LIU Jingyi;WU Binbin;LEI Li(Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China)
出处
《光散射学报》
2022年第4期261-272,共12页
The Journal of Light Scattering
基金
国家自然科学基金NSAF联合基金(U2030107),四川大学“青苗”计划(2020SCUNL107)。
关键词
固态氨
极端条件光散射
相图与结构
solid ammonia
extreme condition light scattering spectroscopy
phase diagram and structure
