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

用于硅酸盐和氧化物矿物氧同位素分析的紫外激光微探针的开发和优化

• 批准号: 9510091
• 负责人: Douglas Rumble
• 金额: $ 5.02万
• 依托单位: Carnegie Institution of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-01 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9510091&HistoricalAwards=false
• 关键词: Development; Optimization; UV; Laser; Microprobe

9510091 Rumble This award supports research to develop an ultra-violet laser microprobe system for in situ analysis of oxygen isotopes in minerals. The system to be developed will be capable of sampling nanomole quantities of oxygen (to obtain isotopic ratios 18O/16O and 17O/16O) from the surface of oxide and silicate mineral samples with a spatial resolution on the order of ten micrometers. Oxygen is the most abundant element in the Earth's crust, and its isotopes are useful as tracers of mass transfer within the crust, as sensitive recorders of water-rock chemical interactions, and as recorders of temperature of rock-water equilibration. ***

小行星9510091 该奖项支持开发用于矿物中氧同位素原位分析的紫外激光微探针系统的研究。将开发的系统将能够从氧化物和硅酸盐矿物样品表面采样纳摩尔数量的氧（以获得同位素18 O/16 O和17 O/16 O），空间分辨率约为10微米。氧是地壳中最丰富的元素，其同位素可用作地壳内物质转移的示踪剂，水-岩石化学相互作用的灵敏记录器，以及岩石-水平衡温度的记录器。 ***