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.

场发射电子探针是一种用于固体材料空间分辨化学（元素）微纳分析的仪器。该分析设备用于矿物学、岩石学、地球化学和其他地质、化学学科或材料科学，以确定天然样品、实验或合成产品的成分特征及其空间变化。矿物成分是地质作用的物理化学条件的基本信息，是地质固体物质结构-性质关系的基础。我们提出了一个综合性的研究计划，它结合了实验岩石学研究，现场为导向的分析研究和热力学/动力学建模，并纳入矿物中的化学变化。我们的实验研究集中在矿物的稳定性，溶解度和平衡或动力学过程中的元素分配，如岩浆系统中的晶体成核和生长。我们的野外研究使用矿物平衡来重建岩浆-热液转换和质量传输的复杂过程，热液流体的重建重点是控制热液系统中的经济金属富集。这些方法产生新的热力学或动力学数据，这些数据可作为各种空间和时间尺度上地质过程解释或预测模型的基础。