Upgrade of Research Equipment: Thermal Ionization Mass Spectrometer in the Department of Earth and Environmental Sciences, University of Rochester

这一支持将升级罗切斯特大学有19年历史的热电离质谱仪（TIMS）。经过19年的连续数据采集，该仪器用于研究和培训，升级涉及用一个数据采集单元取代最近出现故障的五个数字电压表。升级工作还包括以工厂制造的新装置取代TIMS的旧高压装置。这一升级将使罗切斯特的TIMS设施继续运行，延长该仪器的使用寿命和效用，估计再延长8-10年。它还将避免购买新仪器的高昂价格，这是此次升级价格的近十倍。预计拟议的升级和服务将使罗切斯特TIMS，这已经运行了近20年，在方便和获取质量数据的相同标准，因为它是新的。这一升级将对地球科学材料的地球化学研究产生相当大的影响，特别是在罗切斯特大学地球科学系的本科生和研究生以及教师对几种元素的同位素比率的精确测量方面。与过去一样，首席研究员还将与其他国家和国际机构的教师和学生合作进行地球化学研究。罗切斯特的两名女学生，一名研究生和另一名本科生，很可能还有几名，将直接参与这一升级仪器的研究。升级后的仪器进行的所有研究的结果将在国家和国际会议上介绍，并发表在同行评审的期刊上。

This support will upgrade the 19 year- old Thermal Ionization Mass Spectrometer (TIMS) at the University of Rochester. The upgrade, after 19 years of continuous data acquisition for research and training with the instrument, involves replacing the five digital voltmeters that have experienced recent failures by a single data acquisition unit. The upgrade also includes the replacement of the old high voltage unit of the TIMS by a factory-built new unit. This upgrade would allow continued operation of the TIMS facility at Rochester by extending the life and utility of this instrument for another estimated period of 8-10 years. It will also avoid the high price of purchasing a new instrument, which is nearly ten times the price of this upgrade. It is expected that the proposed upgrade and service will bring the Rochester TIMS, that has been functioning well for almost 20 years, to the same standard in the ease and acquisition of quality data as when it was new. This upgrade will have a considerable impact on geochemical research in earth science materials, particularly in precise measurements of isotope ratios of several elements by undergraduate and graduate students and the faculty in the Department of Earth Sciences at the University of Rochester. The principal investigator, as in the past, will also collaborate in geochemical research with faculty and students of other national and international institutions. Two current female students in Rochester, one graduate and another undergraduate, and very likely several more, will be directly involved in research with this upgraded instrument. The results of all research conducted by the upgraded instrument will be presented in national and international meetings and published in peer-reviewed journals.