Upgrading of Multicollector, Thermal Ionization Mass Spectrometer to Ion Counting Detection

该奖项为德克萨斯大学奥斯汀分校地质科学系的热电离质谱仪升级提供了所需资金的一半。该机构承诺提供设备升级所需的剩余资金。准确和精确地测量质谱中的小离子束电流对于PI和地质科学系的同事的研究应用至关重要。升级包括在探测器系统中安装离子计数装置。与现有的模拟二次电子倍增器测量离子电流相反，离子计数将提高该小组分析地下水中低浓度微量元素金属和同位素、岩石中的流体包裹体以及使用铀-铅同位素系统测定锆石小单晶的年代的能力。＊＊＊

9304689 Banner This award provides one-half the funding required for the upgrade of a thermal ionization mass spectrometer in the Department of Geological Sciences at the University of Texas-Austin. The institution is committed to providing the remaining funds needed for the equipment upgrade. Accurate and precise measurement of small ion beam currents for mass spectrometry is critical for the research applications of the PI and colleagues in the Department of Geological Sciences. The upgrade consists of installing an ion counting device in the detector system. Ion counting, as opposed to the existing analog secondary electron multiplier measurement of ion current, will improve the group's capabilities to analyze for low-concentration trace element metals and isotopes in groundwater, fluid inclusions in rocks, and to date small single crystals of zircon using the uranium-lead isotopic system. ***