Electron Microprobe Facility Automation Upgrade

小格罗夫9616827 这笔赠款提供了72，800美元，作为麻省理工学院地球化学分析中心两个电子微探针自动化系统升级费用的部分支持。 其中一台EMP最初是在1972年购买的，后来又升级了一台波长色散光谱仪（总共五台），1992年又购买了一台旧EMP（EMP-918402），以减轻对原始仪器的需求。 这两种工具都得到了麻省理工学院、世界卫生组织、波士顿大学、韦尔斯利学院和哈佛大学等各种区域研究人员的充分认可。 此次升级的目的是更换过时且不再支持的Tracor北方、DEC PDP-11自动化系统，该系统控制这些EMP上的载物台和光谱仪驱动器，还控制能量色散探测器（EDS）的电子设备，并额外处理数据简化和图像分析程序。 这些升级将确保这些EMP的持续功能，并提供最先进的背散射电子图像数字图像分析，从而帮助这些科学家解决岩石学和地球化学中的基本问题，如大陆地壳和岩石圈的生长和演化研究，地壳内岩浆过程的研究，研究部分熔融岩石在不同温度、应力和岩石静压力条件下的力学性质，地幔橄榄岩形成历史的岩石学研究，大洋地壳热液蚀变的性质和碳酸盐成岩作用的研究。 ***

9616827 Grove This grant provides $72,800 as partial support of the costs of upgrading the automation systems on each of two electron microprobes maintained at MIT's Center for Geochemical Analysis. While one of the EMP's was originally purchased in 1972 and has since been upgraded with an additional wavelength dispersive spectrometer (for a total of five), an additional used EMP was purchased in 1992 (EAR-918402) to alleviate demand on the original instrument. Both instruments are fully subscribed by a wide variety of regional researchers from MIT, WHOI, Boston University, Wellesley College and Harvard University to name a few. The purpose of this upgrade is to replace the antiquated and no longer supported Tracor Northern, DEC PDP-11 based automation systems which control both the stage and spectrometer drives on these EMP's and also control the electronics of the energy dispersive detectors (EDS) and additionally handle the data reduction and image analysis programs. These upgrades will ensure continued functionality of these EMP's and provide for state-of-the-art digital image analysis of backscattered electron images thus aiding these scientists to tackle fundamental problems in petrology and geochemistry such as studies of the growth and evolution of continental crust and the lithosphere, studies of magmatic processes within the crust, studies of the mechanical properties of partially molten rocks under varying condition of temperature, stress and lithostatic pressure, petrologic investigations into the formation history of mantle peridotites, the nature of hydrothermal alteration of oceanic crust and studies of carbonate diagenesis. ***