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

1029020deocampo此拨款支持购买具有先进功能的x射线衍射仪（XRD），以允许对一系列样品尺寸（通过要求的微衍射能力低至纳米尺寸的晶体）进行快速相识别和晶体结构分析，并使用一系列x射线强度。该x射线衍射仪将取代乔治亚州立大学（GSU）地球科学系现存但过时（已有25年历史）的x射线衍射仪。新的XRD将支持一系列PI和合作研究，包括：1)美国能源部萨凡纳河遗址粘土矿物的137Cs吸附潜力；2)利用自生粘土矿物鉴定阐明古环境条件的国际大陆钻探项目东非裂谷祖先湖沉积物古气候学和古人类学研究；3)火山泥层的成土作用研究等。XRD将支持本科和研究生教育，并将纳入PI开发的远程学习课程，该课程旨在吸引全州K-12教师和学生。私家侦探是一名早期职业调查员。＊＊＊

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. ***