Upgrading of Infrared Spectroscopic Instrumentation at the Mineral Spectroscopy Lab at the California Institute of Technology

9725897罗斯曼这笔赠款为加州理工学院购买一台新的傅里叶变换红外光谱仪用于结构矿物学和岩石学研究提供部分支持。一台最先进的Nicolet FTIR光谱仪将取代加州理工大学目前购买于1984年的Nicolet 60SX FTIR光谱仪。与目前的FTIR光谱仪相比，这台新仪器将为矿物和玻璃中的挥发性成分(主要是H2O和OH-)的分析提供超过一个数量级的灵敏度。罗斯曼的研究重点是定量分析矿物和玻璃中的水合成分(H2O和OH-)，并表明氢是地壳和上地幔中最普遍的元素之一。这项研究对我们对地球氢收支的理解产生了重大影响，并对地壳和上地幔的流变学和电子性质产生了深远的影响。这笔赠款为矿物光谱学的继续研究提供了最新的工具，包括通过矿物相变研究水和氢氧化物的行为，以及研究包裹体、地幔硅酸盐、玄武岩岩浆、实验高压产物和合成沸石中的挥发物。***

9725897 Rossman This grant provides partial support of the costs of acquiring a new Fourier Transform Infrared (FTIR) spectrometer for structural mineralogic and petrologic research at the California Institute of Technology. A state-of-the-art Nicolet FTIR spectrometer will replace Caltech's current Nicolet 60SX FTIR spectrometer which was purchased in 1984. This new instrument will provide over an order of magnitude greater sensitivity for analyses of volatile components (primarily H2O and OH-) within minerals and glasses relative to their current FTIR spectrometer. Rossman's research focuses on the quantitative analysis of hydrous components (H2O and OH-) in minerals and glasses and has shown hydrogen to be one of the most pervasive elements in the crust and upper mantle. This research has had a major impact on our understanding of the hydrogen budget of the Earth and has profound implications for the rheology and electronic properties of the crust and upper mantle. This grant provides the latest tool for continued research in mineral spectroscopy including studies of the behavior of water and hydroxide through mineral phase changes and studies of volatiles in inclusions, mantle silicates, basaltic magmas, experimental high-pressure run products and synthetic zeolites. ***