Upgrading of Northern Arizona University Electron Microprobe Laboratory

北亚利桑那大学电子探针实验室升级改造

• 批准号: 9812392
• 负责人: Thomas Hoisch
• 金额: $ 2.91万
• 依托单位: Northern Arizona University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-03-15 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9812392&HistoricalAwards=false
• 关键词: Upgrading; Northern; Arizona; University; Electron

9812392HoischThis grant provides support to upgrade the electron microprobe laboratory at Northern Arizona University. The instrument, an ETEC Autoprobe dating from the 1970's, will be outfitted with modern detector electronics and a video optical system. At present, the instrument is equipped with original ETEC preamplifiers, pulse-height analyzers, detector high-voltage power supplies, and rate meters. All are at least 20 years old and have become unstable over the course of operation. Newer components are not available because ETEC is no longer in business. The old components will be replaced with modern off-the-shelf components and the electronic feed-throughs will be modified to accept these new components. These upgrades will indefinitely extend the lifetime of the instrument, increase instrument stability, and allow for easy repair. The existing light optical microscope will be supplemented with a video system consisting of a video camera, monitor, image-capture board, and PC. This upgrade will enhance teaching and training capabilities of the machine appreciably, allowing a number of people to simultaneously observe analytical operations. The image-capture system will allow accurate real-time records of the locations of analyzed points to be generated. The lab serves the northern Arizona and southern Nevada region and is used by faculty from the Departments of Anthropology and Geology at Northern Arizona University, the Department of Geology at the University of Nevada, Las Vegas, and researchers from the U.S. Geological Survey Flagstaff Field Office, and the Navajo Nation Archaeology Department. The lab supports varied research in igneous and metamorphic petrology, archaeology, and anthropology.***

9812392 Hoisch这笔赠款为升级北亚利桑那大学的电子微探针实验室提供支持。这台仪器是东电公司的自动探测器，可以追溯到1970年的S，将配备现代探测器电子设备和视频光学系统。目前，该仪器配备了原装ETEC前置放大器、脉冲幅度分析仪、探测器高压电源和速率计。所有这些人都至少有20岁，在运营过程中变得不稳定。较新的组件不可用，因为ETEC已不再营业。旧组件将被现代现成组件取代，电子馈通将进行改进，以接受这些新组件。这些升级将无限期地延长仪器的使用寿命，增加仪器的稳定性，并允许轻松维修。现有的光学显微镜将配备由摄像机、监视器、图像采集板和PC组成的视频系统。此次升级将显著增强机器的教学和培训能力，允许多人同时观察分析操作。图像捕获系统将允许生成分析点位置的准确实时记录。该实验室服务于亚利桑那州北部和内华达州南部地区，由来自北亚利桑那大学人类学和地质系、内华达大学拉斯维加斯分校地质系的教职员工以及美国地质调查局弗拉格斯塔夫现场办公室和纳瓦霍民族考古部的研究人员使用。该实验室支持火成岩和变质岩石学、考古学和人类学的各种研究。