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. ***

9510091隆隆声支持该奖项支持开发一个超紫色激光微探针系统，以对矿物质中的氧同位素进行原位分析。要开发的系统将能够从氧化物表面和硅酸盐矿物样品表面采样纳米量的氧气（以获得18O/16o和17o/16o），并以十微米的顺序分辨率进行空间分辨率。氧气是地壳中最丰富的元素，其同位素可作为地壳内的传质示踪剂，作为水摇滚化学相互作用的敏感记录，以及岩石水平衡温度的记录。 ***