The Experimental Determination of the Melting Curves of Mantle Materials at Mantle Conditions

地幔条件下地幔物质熔化曲线的实验测定

• 批准号: 9104885
• 负责人: Dion Heinz
• 金额: $ 7.71万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-07-01 至 1992-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9104885&HistoricalAwards=false
• 关键词: Experimental; Determination; Melting; Curves; Mantle

The melting curves of earth materials places important constraints upon the dynamic state of our planet. The PI will accurately measure the melting curves of several geophysically important materials to 100 GPa. The experiments will involve the use of a laser heating system (already developed) that is capable of stabilizing and controlling the temperature of the sample to better than one percent. Past work has indicated the importance of the wavelength dependent emissivity in determining the temperature using spectral radiometry. The measurements will include the measurement of the wavelength dependence of the sample at high temperatures and pressures.

地球物质的熔化曲线对地球的动态状态造成了重要的制约。PI将精确测量几种具有重要地球物理意义的物质的熔化曲线，达到100 GPa.这些实验将涉及使用激光加热系统(已经开发)，该系统能够将样品的温度稳定并控制在1%以下。过去的工作已经表明，在使用光谱辐射测量法确定温度时，依赖于波长的发射率具有重要意义。测量将包括测量样品在高温和高压下的波长依赖关系。