SGER: High Pressure Optical Characterization of Amorphous Silicates and Aluminosilicates

这项探索性研究计划的主要目标是 是开发一种新的方法来研究地质学 重要的无定形材料，如玻璃。 的 方法包括高压金刚石 砧技术和位置选择性激光光谱学。 的 研究将利用普通硅酸盐的合成类似物 和低浓度掺杂的铝硅酸盐 探针离子如Cr 3+或Eu 3+。 结果数据将 用于阐明压力引起的变化， 这些离子的局部配位环境，并研究 高压非晶化的结构机制。 研究结果最终可能会应用于 阐明硅酸盐的化学和物理行为 在地球内部融化

The principal objective of this exploratory research program is to develop a new approach for the study of geologically important amorphous materials such as glasses. The methodology involves a combination of high-pressure diamond anvil techniques and site selective laser spectroscopy. The study will utilize synthetic analogues of common silicates and aluminosilicates that are doped with low concentrations of probe ions such as Cr3+ or Eu3+. The resultant data will be used to elucidate the pressure-induced changes in the local coordination environment of these ions and to study the structural mechanisms of high-pressure amorphization. Results of the research may ultimately find application in elucidating the chemical and physical behavior of silicate melts within the Earth's interior.