Electron microprobe

拟议的电子探针是一种用于样品的化学分析的仪器，具有高空间分辨率和低至10ppm的检测极限。它被要求作为一种旧的和有点过时的工具的替代品，该工具于2001年获得。后一台仪器已经取代了自1989年开始运行的前一台机器。电子探针将安装在拜罗伊特大学的研究中心--巴耶里斯地质研究所(BGI)。华大基因被普遍认为是世界领先的地球科学高压研究机构之一。该研究所的任务是在实验室通过实验研究地球和行星的结构和动力学。目前活跃的研究领域包括地球和类地行星的形成和早期演化、俯冲带中的物质输运过程、地球S地幔的流变学和动力学、地球S核的组成、关键金属矿床的形成和实验火山学。用电子探针分析样品的化学成分是大多数研究项目的中心，该仪器通常24小时自动运行。自2020年以来，华大基因研究所又成立了一个地球化学和宇宙化学研究小组，通过对地球和地外样品进行化学分析来补充实验研究。此外，电子探针设备作为拜罗伊特唯一的此类仪器，为整个大学提供分析服务，特别是为化学系、环境科学系和材料科学系提供分析服务。

The proposed electron microprobe is an instrument for the chemical analysis of sampleswith high spatial resolution and detection limits down to the 10 ppm range. It is requestedas replacement for an old and somewhat outdated instrument, which was acquired in2001. The latter instrument was already the replacement for a previous machine thatwas in operation since 1989.The electron microprobe will be located at Bayerisches Geoinstitut (BGI), a researchcenter at Bayreuth University. BGI is generally considered to be one of the world´sleading institutions in high-pressure research in Earth sciences. The mission of theinstitute is to study the structure and dynamics of the Earth and of planets by experimentsin the laboratory. Current areas of active research include the formation and earlyevolution of the Earth and of the terrestrial planets, the mass transport processes insubduction zones, rheology and dynamics of the Earth´s mantle, the composition ofEarth´s core, the formation of critical metal deposits, and experimental volcanology. Theanalysis of the chemical composition of samples by electron microprobe is central tomost research projects and the instrument is usually in automatic operation 24 hours perday. Since 2020, an additional research group in geochemistry and cosmochemistry hasbeen established at BGI, which complements the experimental research by chemicalanalyses of terrestrial and extra-terrestrial samples. Moreover, the electron microprobefacility, as the only instrument of this kind in Bayreuth, provides analytical services forthe entire university, including in particular for the departments of chemistry,environmental sciences, and materials science.