Upgrade of Research Instrument: Thermal Ionization Mass Spectrometer, Phase II

1034832 Basu该拨款支持罗切斯特大学地球与环境科学系现有热电离质谱仪（TIMS）的升级。 该仪器于1988年安装，后来通过卫星通信/中频支持（卫星通信-0732679）进行了升级，以支持探测器电子设备和现代数据采集系统。 这笔资金将用于其他电子元件的升级（磁铁电源，灯丝控制）。 罗切斯特的TIMS实验室支持放射性同位素地球化学的研究和研究培训，应用于火成岩学、地质年代学和构造学以及环境地球化学方面的问题，包括阿法尔盆地裂谷火山岩的时间和岩石成因研究，加州海岸山脉方济各会复杂俯冲产生的岩浆序列的地球化学和构造研究，以及印度东部拉吉马哈尔溢流玄武岩的岩浆作用研究。 拟议的升级将延长一台使用了22年的仪器的使用寿命，而成本仅为新TIMS的一小部分。

1034832BasuThis grant supports upgrade of an existing thermal ionization mass spectrometer (TIMS) in the Earth and Environmental Sciences Department at the University of Rochester. The instrument was installed in 1988 and later upgraded through EAR/IF support (EAR-0732679 ) to support detector electronics and a modern data acquisition system. This funding will allow for additional electronic component upgrades (magnet power supply, filament control) that are failing. The TIMS lab at Rochester supports research and research training in radiogenic isotope geochemistry as applied to problems in igneous petrology, geochronology and tectonics and environmental geochemistry including studies of the timing and petrogenesis of rift volcanics from the Afar basin, geochemical and tectonic studies of Franciscan complex subduction generated magmatic sequences from the California Coast Ranges, and studies of the magmagenesis of Rajmahal flood basalts from eastern India. The proposed upgrade will extend the life of a 22 year old instrument at a fraction of the cost of a new TIMS.***