Acquisition of X-Ray Diffraction Instrumentation for Mineralogical, Crystallographic, and Geochemical Research and Education

1029020Deocampo这笔赠款支持购买具有先进功能的X射线衍射仪(X射线衍射仪)，以允许对一系列样品尺寸(通过所要求的微衍射能力，细化到纳米尺寸的晶体)和使用一系列X射线强度进行快速物相识别和晶体结构分析。在佐治亚州立大学(GSU)地球科学系，X射线衍射仪将取代现有的但过时的(已有25年历史)X射线衍射仪。新的X射线衍射仪将支持一系列PI和合作研究，包括：1)DOE Savannah河遗址的粘土矿物对137Cs的吸附潜力；2)对从国际大陆钻探项目中发现的东非裂谷古湖沉积物进行古气候学和古人类学调查，该项目依靠自生粘土矿物鉴定来阐明古环境条件；3)研究火山岩的成土作用，仅举几例。该课程将支持本科生和研究生教育，并将被纳入PI开发的一门远程学习课程，该课程试图在全州范围内吸引K-12教师和学生。私家侦探是一名早期的职业调查员。***

1029020DeocampoThis grant supports acquisition of an x-ray diffractometer (XRD) with advanced capabilities to permit rapid phase identification and crystallographic structural analysis of a range of sample sizes (down to nanometer sized crystals via requested microdiffraction capabilities) and using a range of x-ray intensities. The XRD would replace an extant but antiquated (25 yrs old) XRD in the Department of Geosciences at Georgia State University (GSU). The new XRD will support a range of PI and collaborative research including studies of: 1) the 137Cs sorption potential of clay minerals at the DOE Savannah River Site ; 2) paleoclimatological and paleoanthropological investigations of East African Rift ancestral lake sediments recovered from an International Continental Drilling Project that rely on authigenic clay mineral identification to elucidate paleoenvironmental conditions; and 3) investigations of the pedogenesis of volcanic tephras, to name a few. The XRD will support undergraduate and graduate education and will be incorporated into a distance learning course developed by the PI that seeks to engage both K-12 teachers students statewide. The PI is an early career investigator. ***