Field emission electron microprobe

场发射电子探针

• 批准号: 453122287
• 金额: --
• 依托单位: Albert-Ludwigs-Universität Freiburg
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2021
• 资助国家: 德国
• 起止时间: 2020-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/453122287?language=en
• 关键词: Field; emission; electron; microprobe

Field emission electron microprobe is an instrument for spatially-resolved chemical (elemental) micro- and nanoanalysis of solid materials. This analytical device is used in mineralogy, petrology, geochemistry and other geological, chemical disciplines or materials science to determine the compositional characteristics and their spatial variations in natural samples, experimental or synthetic products. The composition of minerals provides primary information on physico-chemical conditions of geological processes and underlies structure-property relations of geological solid matter. We propose an integrative research program, which combines experimental petrology research, field-oriented analytical studies and thermodynamic/kinetic modeling, and incorporating chemical variations in minerals. Our experimental studies concentrate on mineral stabilities, solubilities and element partitioning during equilibrium or kinetic processes such as crystal nucleation and growth in magmatic systems. Our field-oriented research uses mineral equilibria to reconstruct complex processes of magmatic-hydrothermal transitions and mass transport, reconstruction of hydrothermal fluid focusing as control of economic metal enrichments in hydrothermal systems. These approaches result in new thermodynamic or kinetic data, which serve as basis of interpretive or predictive models of geological processes at various spatial and temporal scales.

田间发射电子微探针是一种空间分辨化学（元素）微分析的仪器。该分析装置用于矿物学，岩石学，地球化学和其他地质，化学学科或材料科学，以确定自然样品，实验或合成产品中的组成特征及其空间变化。矿物质的组成提供了有关地质过程的物理化学条件的主要信息，并构成了地质固体物质的结构质地关系。我们提出了一项综合研究计划，该计划结合了实验性岩石学研究，面向现场的分析研究和热力学/动力学建模，并结合了矿物质中的化学变化。我们的实验研究集中于在平衡或动力学过程中的矿物质稳定性，溶解度和元素分配，例如岩浆系统中的晶体成核和生长。我们面向野外的研究使用矿物质平衡来重建岩浆 - 水热过渡和大众传输的复杂过程，重建水热液聚焦，作为控制水热系统中经济金属富集的控制。这些方法导致新的热力学或动力学数据，这些数据是各种空间和时间尺度上地质过程的解释性或预测模型的基础。