Coordination of the research unit 2125

第2125章 研究单位的协调

• 批准号: 264057058
• 负责人: Professor Dr. Björn Winkler
• 金额: --
• 依托单位: Fachrichtung Mineralogie
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/264057058?language=en
• 关键词: Coordination; research; unit; 2125

The relevance of the proposed research stems from our current lack of knowledge about the structures, properties and behavior of carbonates at high pressures and temperatures. Carbonates are an important part of the deep carbon cycle: the solubility of carbon in dominant mantle phases is relatively low which means that carbon is stored in accessory phases, predominantly carbonates. Quantifying the carbon cycle requires identication of the pathways for carbon exchange as well as the uxes along those pathways.The scientic objectives of the Research Unit are therefore to understand structures and properties of carbonates, and of processes involving carbonates at high pressures and temperatures.Specifically we want to (a) delineate phase boundaries in the system Ca - Mg - Fe - Sr - CO3, (b) observe reactions of carbonates with silicates and oxides, (c) understand the formation of compounds and element partitioning at extreme conditions, (e) clarify structureproperty relations at mantle conditions. In order to reach these scientic objectives, certain methodological developments are required. Specically, we need to complete the development of single crystal diraction studies at extreme conditions, and to continue the development of micro X-ray uorescence at the Extreme Conditions beamline P02.2 at PETRA III (Hamburg), the application of X-ray Raman scattering spectroscopy at high p/T at the Inelastic Scattering beamline P01 of PETRA III, the developments of shock wave experiments in Freiberg and of advanced spectroscopic (second harmonic generation (SHG), time resolved laser uorescence spectroscopy (TRLFS), coherent anti-Stokes Raman spectroscopy (CARS), and synchrotron based FTIR and Terahertz spectroscopy measurements in Frankfurt and Berlin.

拟议研究的相关性源于我们目前对高压和温度下碳酸盐的结构，特性和行为的了解。碳酸盐是深碳循环的重要组成部分：碳在主要地幔相中的溶解度相对较低，这意味着碳储存在辅助相中，主要是碳酸盐。量化碳循环需要确定碳交换的途径以及沿这些途径的UXES。因此，研究单元的科学目标是了解碳酸盐的结构和特性，以及在高压和温度下涉及碳酸盐的结构和特性。硅酸盐和氧化物，（c）了解在极端条件下化合物和元素划分的形成，（e）澄清地幔条件下的结构性关系。为了达到这些科学目标，需要进行某些方法论发展。 Specically, we need to complete the development of single crystal diraction studies at extreme conditions, and to continue the development of micro X-ray uorescence at the Extreme Conditions beamline P02.2 at PETRA III (Hamburg), the application of X-ray Raman scattering spectroscopy at high p/T at the Inelastic Sc​​attering beamline P01 of PETRA III, the developments of shock wave experiments in Freiberg and of advanced spectroscopic (second harmonic在法兰克福和柏林中，产生（SHG），时间解析的激光效率光谱（TRLF），相干的反Stokes拉曼光谱（CARS）以及基于同步加速器的FTIR和基于同步加速器的FTIR和Terahertz光谱测量值。