Upgrade of the Duke University Electron Microprobe

1028271Boudreau该奖项在12个月内为NSF提供11,840美元的资金，用于购买使用硅漂移探测器(SSD)技术的EDS光谱仪。目前的检测器使用的是一种较旧的技术，这使得分析相对于所要求的检测器非常慢，并且为消耗的液氮带来了额外的成本。杜克大学和北卡罗来纳大学将支持一半的单位成本。新的探测器将用于北卡罗来纳大学和杜克大学的地球和材料科学。新探测器将进行的科学研究将包括研究间隙流体结晶过程中的挥发分和富含挥发分的流体、层状侵入体的结构演化、深成岩的形成和生长、碎屑锆石的运输、矿物学、大洋玄武岩地球化学以及古气候学和古海洋学。该设施支持杜克大学和北卡罗来纳州大学以及其他学院和大学的广泛的岩石学、地球化学和环境研究兴趣。新的探测器将被纳入地球科学本科生和研究生的课程。手头有两台不工作的备用仪器，用于获取过时的部件。仪器将由PI进行维护。PI还将培训新用户。升级后的仪器预计不会需要比目前所需更多的支持。***

1028271BoudreauThis award provides $11,840 in NSF funding over 12 months to acquire an EDS spectrometer which uses Silicon Drift Detector (SSD) technology. The current detector uses an older technology which makes analyses very slow relative to the requested detector and carries additional costs for consumable liquid nitrogen. Duke and UNC will support half the unit cost. The new detector will be used for Earth and materials sciences at UNC and Duke. Science to be undertaken with the new detector will involve study of volatiles and volatile-rich fluids during interstitial fluid crystallization, the textural evolution of layered intrusions, plutonic petrogenesis and growth, detrital zircon transport, mineralogy, oceanic basalt geochemistry, and paleoclimatology and paleoceanography. The facility supports a wide range of petrographic, geochemical and environmental research interests at Duke and the UNC, as well as other colleges and universities in North Carolina. The new detector will be incorporated into courses to both undergraduate and graduate students in geosciences. Two non-working spare instruments are on hand for obtaining outdated parts. The instrument will be maintained by the PI. The PI will also train new users. The upgraded instrument is not expected to require any more support than currently needed. ***