Construction of a high-vacuum, laser-fluorination extractionline for isotopic analysis of silicate and oxide minerals

建造用于硅酸盐和氧化物矿物同位素分析的高真空激光氟化提取线

• 批准号: 9018999
• 负责人: Hugh Taylor
• 金额: $ 2.34万
• 依托单位: California Institute of Technology
• 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: 1991-07-15 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9018999&HistoricalAwards=false
• 关键词: Construction; vacuum; laser; fluorination; extractionline

This award provides 50% of the funds needed to assemble a laser fluorination extraction line for the analysis of oxygen isotopes in small samples. The extraction system will be installed in the Division of Geological and Planetary Sciences at the California Institute of Technology. Caltech is committed to providing the remaining 50% necessary to acquire the laser source. The equipment will be used by Caltech geochemists to analyze the oxygen isotope composition of small mineral samples from terrestrial igneous and metamorphic rocks, ore deposits, and meteorites. The technique involves laser heating of silicates in a reaction chamber that contains the sample and a fluorinating agent. The reaction produces oxygen for isotopic analysis with high sensitivity and excellent spatial resolution and allows the solution of geological problems such as the multiple timing of vein mineralization, isotopic zoning of mineral grains, and the explanation of hydrothermal effects in and around crystallizing magma bodies.

该奖项提供了50%的资金，需要组装一个 氧分析用激光束萃取线 小样本中的同位素。抽取系统将安装在 地质和行星科学司 加州理工学院。加州理工学院致力于 提供获取激光源所需的剩余50%。 加州理工学院的地球化学家们将用这些设备来分析 小矿物样品的氧同位素组成 陆地火成岩和变质岩，矿床， 陨石这项技术涉及激光加热硅酸盐， 反应室，其包含样品和氟化反应器， 剂该反应产生用于同位素分析的氧， 灵敏度和出色的空间分辨率， 解决了矿脉多期性等地质问题 成矿作用、矿物颗粒的同位素分带及成矿机理 结晶过程中及周围水热效应的解释 岩浆体