Support of An Ion Microprobe Facility

9509641哈里森这笔赠款为加州大学洛杉矶分校的Cameca IMS-1270型高传输、高分辨率离子微探测器提供运营和维护支持，作为世界级的微量分析设施。这是美国同类仪器中的第一台，也是为在微观尺度上分析陆地和行星材料的同位素和元素组成而设计的新仪器中的第一台，并具有在我们理解地球化学过程方面取得重大进展的巨大潜力。将在三年期间提供600 000美元的支助，这是在两年赠款之后提供的，这笔赠款支持该仪器的初步试运行和为锆石和二辉橄榄石的U-Th-Pb分析制定测量程序。预计到这三年期间结束时，将为这些分析建立一个重要的用户基础。将继续开发电绝缘样品中氧同位素组成的测量技术和钍同位素系统学，并有望为同位素地球化学界所用。***

9509641 Harrison This grant provides funds for operations and maintenance support of the CAMECA ims-1270 high transmission, high resolution ion microprobe at UCLA as a world class microanalysis facility. This is the first instrument of its kind in the U.S. and in the generation of new instruments designed to analyze the isotopic and elemental composition of terrestrial and planetary materials at the micro-scale and has great potential to provide major advances in our understanding of geochemical processes. Support will be in the amount of $600,000 over a three year period and follows a two year grant which supported the initial commissioning of this instrument and the development of measurement routines for U-Th-Pb analyses of zircon and monzanite. It is expected that a significant user-base will be established for these analyses by the end of this three-year period. Development of measurement techniques for the oxygen isotopic composition in electrically insulating samples and Thorium isotope systematics will continue and hopefully become available to the isotope geochemical community. ***