Collaborative Research: Mineral Structures at High Pressure

9406047布朗PIS将使用高压实验方法和仪器测量全套弹性常数，使用脉冲刺激散射、整体压缩和使用X射线衍射法在相同的样品和相同的钻石顶头单元中进行晶体结构精细化。这样，就有可能获得对室温弹性参数的独立校核，并将结果外推到高温。待测样品包括镁铝榴石-粗铝榴石-铁铝榴石三元系的天然和合成立方石榴石、橄榄石和辉石。****

9406047 Brown The PIs will use high pressure experimental methods and instrumentation to measure a full set of elastic constants using impulse stimulated scattering, bulk compression, and crystal structure refinement using x-ray diffraction methods on the same sample and in the same diamond anvil cell. In this way, it may be possible to obtain an independent check on room temperature elastic parameters and to extrapolate results to elevated temperatures. Samples to be measured include natural and synthetic cubic garnets of the pyrope-grossular-almandine ternary, olivines and pyroxenes. ****