项目名称: 高温高压极端条件下H2O-CO2流体性质及其对橄榄岩体系高压物性的影响研究
项目编号: No.11274137
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 数理科学和化学
项目作者: 周强
作者单位: 吉林大学
项目金额: 93万元
中文摘要: 高温高压下水、二氧化碳流体体系的物理化学性质及其与地球内部物质的相互作用是凝聚态物理、地球物理及地球演化过程的重要研究内容。本课题拟采用自主发展的激光加热布里渊散射技术,建立高温高压下二元流体体系布里渊散射实验方法,对高温高压极端条件下水及二氧化碳二元流体体系的性质进行研究,探索水及二氧化碳二元流体体系的声速、折射率、状态方程等物理量随温度压力的变化规律;同时结合激光加热高压同步辐射X射线衍射技术,进一步研究橄榄岩体系在高温高压水及二氧化碳流体作用下的晶体结构、相变路径等物理性质随流体的组分、温度、压力的变化规律,探索分子解离的微观机制以及超临界流体奇异宏观性质,为加深理解地球内部各种地质活动的起因以及地球内部矿物组成元素的存在形式和富集迁移的规律提供重要的高温高压实验数据。项目的研究内容既有重要的理论意义,又有广泛的实际应用背景。
中文关键词: 高温高压;同步辐射;布里渊散射;水及二氧化碳流体体系;
英文摘要: The properties of H2O-CO2 liquid system and the interaction with the minerals inside the earth is the significant content of condensed matter physics,geophysical science and the evolution of the earth. In this project, the synchrotron X ray diffraction technique and laser heating brillouin scattering system,which is developed in our lab will be used to study the properties of the H2O-CO2 liquid system, the acoustic velocity,refraction index and the EOS of the liquid system under hihg pressure and high temperature condition will be investigated.Furthermore,how do the pressure,tempreature and component of the liquid system affect the basic physics properties of Olivine mineral,such as crystal strutures,path of phase transtions,etc, will also be studied. The project will investigate the principle of the decomposition of the molecular system and the properties of supercritical liquid. The data could also be used to understand the complicated phenomenon of the earth.The content of this project is significant for both the theory study and the application science.
英文关键词: High temperature high pressure;Synchrotron;Brillouin scattering;H20-CO2 binary fluid system;