Experimental Petrology of Lunar and Planetary Igneous Rocks

9813447沃克，这项研究的目标是了解由火成岩过程造成的行星分化。研究方法包括：(1)利用实验岩石学研究行星材料和相关合成成分的熔融、元素分配和/或分解；(2)实验产品和自然样品的岩石学和显微探针研究以及岩浆系统的理论和数值模拟；(3)高温高压相平衡、元素分配和材料行为研究的技术发展。将开展以下项目：(A)探索非常高的亲铁元素在熔体和硅酸盐液体之间分配的P、T和液体组成的关系；(B)用同步加速器X射线衍射法研究同时具有高P和T的石榴石溶液系列的体积；(C)通过使用同步加速器X射线衍射仪跟踪相关的晶体分解曲线，确定选定的流体物质的高P、T、体积；(D)改善基于碳化铝和氮化物复合材料的半导体加热器的掺杂性能、可靠性和X射线透明度；(E)完成P对热电偶电动势的影响的超热中子共振测温测量的数据简化工作。

9813447 Walker The goal of this research is to gain an understanding of planetary differentiation by igneous processes. Methods of study include: (1) melting, element partitioning, and /or decomposition studies of planetary materials and related synthethic compositions using experimental petrology; (2) petrographic and microprobe studies of experimental products and natural samples as well as theoretical and numerical modeling of magmatic systems; (3) technique development for studies of high temperature and pressure phase equilibria, element partitioning and materials behavior. The following projects will be undertaken: (a) exploration of the P, T, and liquid compositional dependence of the partitioning of very highly siderophile elements between melt and silicate liquids; (b) study of the volume of the garnet solution series at simultaneously high P and T by synchrotron XRD; (c) determination of high P, T, volumes of selected fluid substances by tracking relevant crystal decomposition curves using sychrotron XRD; (d) improvement of the doping properties, reliability, and X-ray transparency of semiconductor heaters based on Al carbide and nitride composites; (e) completion of the data reduction of epithermal neutron resonance pyrometry measurements of the effect of P on thermocouple emf.