U.S.-France Cooperative Research: Structural Studies of Aluminosilicate Glasses and High Temperature Liquids

这个为期两年的奖项支持美国-法国在地幔地球化学方面的合作研究，该研究由亚利桑那州立大学（ASU）的Paul McMillan和Charles Angell以及法国奥尔良高温物理中心的J.P. coucoures进行。他们的研究目的是研究铝硅酸盐液体和玻璃的结构特性，使用高温和固态NMR（核磁共振）光谱、红外光谱、拉曼散射和MD（分子动力学）模拟相结合。亚利桑那州立大学的研究小组在矿物、玻璃和液体的振动光谱学和拉曼散射方面带来了合作经验。法国研究人员在液体中使用超高温核磁共振的创新研究补充了这一点。铝硅酸盐存在于地球的上地幔中。了解铝硅酸盐的结构-性质关系对我们了解地球和其他行星的动态过程和组成是必不可少的。这些高压和高温研究将使研究人员能够模拟地球上地幔条件下的融化和转变过程。

This two-year award supports U.S.-France cooperative research in mantle geochemistry between Paul McMillan and Charles Angell of Arizona State University (ASU) and J.P. Coutoures of the Center for High Temperature Physics in Orleans, France. The objective of their research is to investigate the structural properties of aluminosilicate liquids and glasses, using a combination of high temperature and solid state NMR (nuclear magnetic resonance) spectroscopy, infrared spectroscopy, Raman scattering, and MD (molecular dynamics) simulation. The ASU group brings to this collaboration experience in vibrational spectroscopy and Raman scattering of minerals, glasses and liquids. This is complemented by the French investigators' innovative research using ultra-high temperature NMR in liquids. Aluminosilicates are found in the Earth's upper mantle. Knowledge of the structure-property relationship of aluminosilicates is essential to our understanding of dynamic processes and composition of the Earth and other planets. These high pressure and temperature studies will allow researchers to simulate the melting and transition process under conditions representative of the Earth's upper mantle.