Acquisition of a High Power Laser for Resonance Ionization Mass Spectrometry

该奖项提供部分资金，将现有的9英寸磁扇形质谱计改造成使用共振电离的仪器，并将多个同位素同时检测与电子倍增器结合在一起。转换将建立在国家标准局开发的激光共振电离系统的基础上。该仪器的开发、安装和运行将在华盛顿卡内基研究所的地磁系进行。新系统将使Re.Os同位素系统的测量达到比目前更高的精度和灵敏度水平，其成功开发将为同位素地球化学研究界提供重要的新研究能力。由于Re.Os系统的地球化学行为，它的研究提供了关于地壳、地幔和地核演化的独特信息。

This award provides partial funding to convert an existing 9.inch magnetic sector mass spectrometer into an instrument that uses resonance ionization and incorporates simultaneous multiple isotope detection with electron multipliers. The conversion will build on a laser resonance ionization system developed at the National Bureau of Standards. Development, installation and operation of the instrument will take place at the Department of Terrestrial Magnetism of the Carnegie Institution of Washington. The new system will allow measurements of the Re.Os isotope system at higher levels of precision and sensitivity than possible at present, and its successful development will provide important new research capabilities for the isotope geochemistry research community. Because of the geochemical behavior of the Re.Os system its study provides unique information on the evolution of the Earth's crust, mantle and core.