Upgrade of Electron Microprobe for Improved Compositional Imaging Capability

9406187 Tracy这笔拨款为弗吉尼亚理工学院和州立大学地质科学系安装和运行的电子显微探针仪器的升级提供了70%的资金。该机构承诺为此次升级提供所需的剩余资金。升级将提供新的计算机控制仪器以及无污染的真空泵系统。VPI的电子探针被广泛用于获取微米尺度空间分辨率的地质样品中元素分布的图像，这需要现代计算机自动化和泵送系统，该系统在长时间暴露于电子束时不会污染样品表面。＊＊＊

9406187 Tracy This award provides 70 per-cent of the funding required for the upgrade of the electron microprobe instrument housed and operated in the Department of Geological Sciences at the Virginia Polytechnic Institute and State University. The institution is committed to providing the remaining funds necessary for this upgrade. The upgrade will provide new computer control of the instrument as well as a contamination-free vacuum pumping system. The electron microprobe at VPI is used extensively to obtain images of element distributions in geological samples with micron scale spatial resolution, requiring modern computer automation and a pumping system that will not contaminate the sample surface during long exposure to the electron beam. ***