Acquisition of a Brillouin Spectrometer for Measurement of High-Pressure Elastic Properties of Earth Materials

小行星9725453 这笔赠款提供了部分支持，用于购买布里渊光谱系统的费用，用于直接测量金刚石砧室（DAC）中矿物在上地幔和下地幔压力和温度下的单晶弹性模量。 这些测量对于解释地球地幔的成分、热结构和流变学是至关重要的。 此外，矿物弹性数据是矿物物理学问题的基础，包括理解压力引起的非晶化现象和高压实验的绝对压力标度的发展。 拟议的设施将产生关于矿物和矿物组合在压力范围内的弹性特性的新数据，这些压力范围跨越地球最上层下地幔的一个重要过渡区，对于我们理解地幔动力学和解释地震数据至关重要。 ***

9725453 Duffy This grant provides partial support of the costs of acquiring a Brillouin spectroscopy system for direct measurement of the single-crystal elastic moduli of minerals in diamond anvil cells (DAC) at upper to lower mantle pressures and temperatures. These measurements are fundamental to interpretation of the composition, thermal structure and rheology of the Earth's mantle. Additionally, mineral elasticity data are fundamental to problems in mineral physics including understanding the phenomenon of pressure induced amorphization and development of an absolute pressure scale for high pressure experimentation. The proposed facility will generated new data on the elastic properties of minerals and mineral assemblages at pressure ranges that span an important transition zone in the uppermost lower mantle of the Earth and which are fundamental to our understanding of mantle dynamics and to interpretation of seismic data. ***