Acquisition of a Fourier transform infrared spectrometer to map water in the Earth's mantle

购买傅里叶变换红外光谱仪来绘制地幔中的水图

• 批准号: 0743377
• 负责人: Anne Peslier
• 金额: $ 12.35万
• 依托单位: Universities Space Research Association
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-01 至 2010-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0743377&HistoricalAwards=false
• 关键词: Acquisition; Fourier; transform; infrared; spectrometer

0743377Peslier This proposal seeks funding to acquire a Fourier transform infrared spectrometer (FTIR) with a microscope attachment. This acquisition will allow microspectroscopy at the mid-IR, near-IR and UV-visible spectral range with spatial resolution approaching 8 µm. Requested is a Thermo-Nicolet 6700 FT-IR spectrometer with a Continuum XL IR microscope. The new acquisition will be housed at the Lunar and Planetary Institute (LPI). This instrument will enable the analysis of water variations and content in geologic specimens from various mantle domains (oceanic versus continental, cratonic versus non-cratonic, etc). Specific applications are to 1) map OH and H2O vibrational regions on individual mineral samples, 2) map OH absorbance intensity on single grains, 3) analyze hydrogen in mantle minerals with water content less than 0.3 ppm, 4) identify different hydrogen species in glass and mineral matrices, and 5) generate 3D water maps in upper mantle regions. The instrument will be managed by the PIs who will provide training and ensure optimal usage. PI Peslier is the electron microprobe manager at the Astromaterials and Space Research division at NASA-Johnson Space Center and a visiting scientist at LPI with 50% labor for electron microprobe management and 50% research. The FTIR will be located at LPI to allow collaborators from other institutions as well as foreign nationals access to the instrumentation. The instrument will be made available to researchers engaged in water ? rock measurements on terrestrial and extraterrestrial samples. Six major users in addition to the two PIs will use the instrument for various projects. Researchers from University of Houston Downtown, UH - Clear Lake, UH ? Galveston, Texas A&M, Houston College of Sciences, Texas Southern and others will have instrument access.***

0743377 Peslier该提案寻求资金以获得带显微镜附件的傅里叶变换红外光谱仪（FTIR）。此次收购将允许在中红外，近红外和紫外可见光谱范围内进行显微光谱分析，空间分辨率接近8 µm。要求使用Thermo-Nicolet 6700 FT-IR光谱仪和Continuum XL IR显微镜。新的收购将被安置在月球和行星研究所（LPI）。这一仪器将能够分析各种地幔域（大洋与大陆、地幔与非地幔等）地质样品中的水分变化和含量。具体的应用是1）映射OH和H2O振动区域在单个矿物样品上，2）映射OH吸收强度在单个颗粒上，3）分析氢在地幔矿物与水含量小于0.3 ppm，4）识别不同的氢物种在玻璃和矿物基质中，和5）生成3D水地图在上地幔区域。仪器将由PI管理，PI将提供培训并确保最佳使用。PI Peslier是NASA约翰逊航天中心天体材料和空间研究部门的电子探针经理，也是LPI的访问科学家，50%的劳动力用于电子探针管理和50%的研究。FTIR将位于LPI，以允许来自其他机构的合作者以及外国公民访问仪器。该仪器将提供给从事水？地球和外星样本的岩石测量。除两个项目执行机构外，还有六个主要用户将在各种项目中使用该仪器。来自休斯顿市中心大学的研究人员，呃-清澈的湖水，呃？加尔维斯顿、得克萨斯州A M、休斯顿科学学院、得克萨斯州南部和其他地方将拥有仪器访问权限。*