Acquisition of a New Automatic X-ray Powder Diffractometer

9804769这笔赠款为普渡大学地球和大气科学系购买一台新的计算机控制的X射线衍射谱仪提供了部分资助。对这笔赠款的支持由地球科学仪器和设施计划(EAR/IF)和普渡大学(50%)共同提供。新的X射线衍射仪将取代旧的和过时的X射线衍射仪，并将安装在普渡大学土木工程大楼的完全气候控制的X射线实验室。几位教员和他们的研究小组将在广泛的课题研究中使用新设备：R.Giere博士，用于各种变质岩的矿物学和岩石学研究；R.Giere博士，用于城市和高级核废料的结晶废物形式的表征，以及实验岩石学的研究项目；S.J.Fritz博士，用于测定土壤和风化层中的粘土矿物和其他相，以及检查煤堆淋滤产生的沉淀物；K.D.Ridgway博士，用于表征页岩、火山灰和凝灰岩以及沉积盆地中的其他细粒岩石；R.O.Sack博士，用于鉴定和表征岩石学实验中消耗或产生的原料和连续产品；J.M.Harbor博士，用于细粒冰川沉积物的来源研究，以及环境研究，用于非点源污染物的矿物学鉴定。新的X射线衍射仪也将用于教学目的。地球和大气科学系提供了一个研究密集型的学习环境，要求本科生在课程工作中学习各种类型的分析方法，包括X射线衍射。***

9804769 Giere This grant provides partial support for the costs of acquiring a new computer-controlled X-ray diffraction (XRD) spectrometer for the Department of Earth and Atmospheric Sciences at Purdue University. Support for this grant is shared between the Earth Sciences Instrumentation and Facilities Program (EAR/IF) and Purdue University (50%). The new XRD will replace an old and obsolete XRD and will be installed in the fully climate- controlled X-ray laboratory in the Civil Engineering Building at Purdue University. Several faculty members and their research groups will be using the new equipment in studies on a wide range of topics: Dr. R. Giere for mineralogical and petrologic investigations of various metamorphic rocks, characterization of crystalline waste forms for municipal and high-level nuclear waste, and for research projects in experimental petrology; Dr. S.J. Fritz for determination of clay minerals and other phases in soils and weathering horizons, and for examination of precipitates produced during leaching of coal piles; Dr. K.D. Ridgway for characterization of shales, volcanic ashes and tuffs, and other fine-grained rocks in sedimentary basins; Dr. R.O. Sack for identification and characterization of starting materials and run products consumed or produced during petrologic experiments; and Dr. J.M. Harbor for provenance studies of fine- grained glacial deposits, and in environmental studies, for mineralogical identification of non-point source pollutants. The new X-ray diffractometer will also be utilized for teaching purposes. The Department of Earth and Atmospheric Sciences provides a research-intensive learning environment, where undergraduate students are required to learn various types of analytical methods, including X-ray diffraction, during their course work. ***