Acquisition of a New Electron Microprobe for The University of Arizona

这项奖励是根据2009年《美国复苏和再投资法案》(公法111-5)资助的。这项提案寻求50万美元(总成本的一半)的资金，以获得一个新的电子微探针。NASA将在另一项资助行动中为其余50%提供资金。目前的Cameca SX50探测器已有18年的历史，使用频繁(每月400小时)，并支持来自UA和其他美国、外国和社区机构的用户。在过去17年中，目前的文书在265份同行评审的出版物、75篇博士论文和35篇理科硕士论文中提供了数据。由于维护问题，目前的仪器出现了更长的停机时间，而且即使可能的话，也变得很难找到更换部件。需要一种新的Cameca微型探头，带有波长色散光谱仪(WDS)、能量色散光谱仪(EDS)、不间断电源(UPS)和循环水冷冻机。新仪器将安装在现有的设施中。UA将为改建提供资金。私人投资公司将全面负责收购，而联合投资公司将担任设施经理，并由国家提供全部资金。这项调查将对UA正在进行的几个研究项目起到重要作用。要讨论的问题包括：通过矿物学和地球化学了解地球和其他行星的历史；确定地球和其他类地行星的早期热史；确定地球和其他类地行星的物质组成和性质；通过球粒陨石分析了解早期行星的吸积作用；了解原始无球粒陨石；确定早期太阳系的大规模混合和低温成分；确定与类地行星过程有关的太阳系年代学、热力学、相平衡和扩散动力学；U-Th-Pb年代学；以及发展其他计时器和热力学、矿产资源识别和构造。该仪器的考古应用包括了解早期人类环境，追踪冶金和陶瓷在早期文明中的发展、采用和传播。此次收购将取代和增强被广泛使用的大学和协作资源的能力。该设施将向外部用户开放。***

0841669DrakeThis award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This proposal seeks $500K (1/2 total cost) in funding to acquire a new electron microprobe. NASA will fund the other 50% in a separate funding action. The current Cameca SX50 probe is 18 years old, heavily used (400 hours / month), and has supported users from UA and other US, foreign and community institutions. Over the past 17 years, the current instrument has provided data in over 265 peer-reviewed publications, 75 PhD theses and 35 M.S. theses. The current instrument has seen increased downtime due to maintenance issues and replacement parts are becoming difficult, if even possible, to find. Requested is a new Cameca microprobe with Wavelength Dispersive Spectrometers (WDS), an Energy Dispersive Spectrometer (EDS), an Uninterruptible Power Supply (UPS), and re-circulating water chiller. The new instrument will be housed in the existing facility. UA will provide funds for remodeling. The PI will have overall responsibility for the acquisition while co-PI will be the facility manager and be fully-funded by the state. The probe will be instrumental in several on-going research projects at UA. Questions to be addressed include understanding Earth and other planet?s history though mineralogy and geochemistry, determining the early thermal history of Earth and other terrestrial planets, determining the material composition and properties of Earth and other terrestrial planets, understanding early planetary accretion through chondrite analysis, understanding primitive achondrites, determining large-scale mixing and low-temperature components in the early solar system, determining solar system chronology, thermodynamics, phase equilibrium and diffusion kinetics related to terrestrial planetary processes, U-Th-Pb geochronology and developing other chronometers and thermochronometers, mineral resource identification and tectonics. Archeological applications for the instrument include understanding early human environments and tracing metallurgic and ceramic development, adoption and spread in early civilizations. This acquisition will replace and enhance the capabilities of a widely-used University and collaborative resource. The facility will be open to outside users. ***