Acquisition and Development of UV-Laser Microprobe for Oxygen Isotope Analysis of Silicate and Oxide Minerals

该合同为建造用于分析硅酸盐和氧化物矿物中的氧同位素比率的紫外激光微探针所需的组件提供了一半的资金。激光微探针将在华盛顿卡内基研究所的地球物理实验室进行设计、制造、安装和操作。华盛顿卡内基研究所承诺提供完成该项目所需的剩余资金。用于氧同位素浓度原位微分析的激光微探针系统的发展预计将对地质系统中稳定同位素变化的解释产生重大影响，因为它允许以几微米的空间分辨率测量同位素变化，与矿物样品保存生长过程中继承的同位素分带的尺度相当。＊＊＊

9413693 Rumble This award provides one-half the funding for the acquisition of the components needed to build an ultra- violet laser microprobe for the analysis of oxygen isotope ratios in silicate and oxide minerals. The laser microprobe will be designed, built, installed, and operated in the Geophysical Laboratory of the Carnegie Institution of Washington. The Carnegie Institution of Washington is committed to providing the remaining funds necessary to complete the project. The development of the laser microprobe system for in situ microanalysis of oxygen isotope concentrations is expected to make a large impact in the interpretation of stable isotope variations in geological systems by allowing the measurement of isotopic variations to be made with a spatial resolution of several micrometers, comparable to the scale on which mineral samples preserve the isotopic zoning inherited during growth. ***