Development of microbeam Analytical Capabilities for the Secondary Ion Mass Spectrometer

小行星9305201 将对亚利桑那州立大学的二次离子质谱仪（西姆斯或离子微探针）进行改进，以提高一次离子束的性能（直径更小，因此分析空间分辨率更高）。还将实现更好的真空，从而降低检测极限，特别是对于轻挥发性元素。仪器改良将由主要研究者和同事在内部设计、构建和测试。改进的ASU离子微探针将提供给校内和校外的研究人员，并将主要用于地球科学项目，以确定地质和陨石样品的同位素和微量元素成分，空间分辨率为几微米。 ***

9305201 Hervig The secondary ion mass spectrometer (SIMS or ion microprobe) at Arizona State University will be modified to improve the performance of the primary ion beam (smaller diameter and, hence, better analytical spatial resolution). A better vacuum will also be achieved, resulting in a lowering of detection limits, especially for light volatile elements. The instrument modifications will be designed, built and tested in-house by the Principal Investigator and colleagues. The improved ASU ion microprobe will be available to on-campus and off-campus researchers, and will be used primarily in earth sciences projects to determine isotope and trace element compositions of geological and meteorite samples with a spatial resolution on the order of several micrometers. ***