MRI: Acquisition of a state-of-the-art thermal ionization mass spectrometer

来自主要研究和仪器计划（MRI）的奖励将支持在斯克里普斯海洋研究所新成立的斯克里普斯同位素地球化学实验室购买热电离质谱仪（TIMS）进行最先进的同位素测量。这种新仪器将增强圣地亚哥地区现有的质谱设施。TIMS仪器将允许精确测量一系列灭绝的（例如，Mn-Cr）、长寿命放射性（例如，Os、Sr、Nd、Pb）和稳定同位素系统（例如，Ca）在一系列的样品大小和用于一系列的地质，宇宙化学，海洋学和生物过程。该仪器将用于测量火成岩的放射性同位素组成，以了解行星的形成和分化，并跟踪地球的化学变化？的地幔，建立贵金属矿的形成，并调查过程中发生的高爆炸性火山爆发。在生物和海洋科学中，该仪器将用于精确测量海洋生物碳酸盐骨架中的稳定同位素分馏，以研究海洋酸化，并对热液蚀变和生物介导的水岩相互作用进行同位素示踪。新的TIMS设施将有助于实现一个基本的义务，培养一个越来越大的，多样化的和有才华的博士后研究人员和研究生和本科生谁依靠同位素方法在圣地亚哥地区的论文研究池。它将允许通过独立的研究论文，本科课程的研究经验，并通过整合的原则，例子和同位素比测量方法，使用下一代质谱到课堂上增强本科生的参与。一个最先进的技术信息管理系统还将加强正在进行的社区外联工作，包括为代表性不足的少数民族和女学生在科学、技术、工程和数学活动中使用的示范和范例。

An award from the Major Research and Instrumentation Program (MRI) will support the acquisition of a Thermal Ionization Mass Spectrometer (TIMS) for state-of-the-art isotopic measurements at the newly-formed Scripps Isotope Geochemistry Laboratory at Scripps Institution of Oceanography. This new instrumentation will enhance existing mass spectrometry facilities in the San Diego region. A TIMS instrument will allow precise measurements of a range of extinct (e.g., Mn-Cr), long-lived radiogenic (e.g., Os, Sr, Nd, Pb), and stable isotope systems (e.g., Ca) at a range of sample sizes and employed to a range of geological, cosmochemical, oceanographic and biological processes. The instrument will be used to measure radiogenic isotope compositions of igneous rocks to understand planet formation and differentiation and to trace chemical variations in Earth?s mantle, to establish the formation of precious metal ores and to investigate processes occurring during highly-explosive volcanic eruptions. In the biological and ocean sciences the instrument will be used to precisely measure stable isotope fractionations in the carbonate skeletons of marine organisms to study ocean-acidification, and to isotopically trace hydrothermal alteration and biologically mediated water-rock interactions. The new TIMS facility will help achieve a fundamental obligation to train an increasingly large, diverse and talented pool of post-doctoral researchers and graduate and undergraduate students who rely on isotopic approaches for their dissertation research in the San Diego area. It will permit enhanced undergraduate participation through independent research dissertations, research experience for undergraduate programs, and through integration of principles, examples and methods of isotope ratio measurements using next-generation mass spectrometry into the classroom. A state-of-the-art TIMS will also enhance on-going community outreach efforts, including demonstrations and examples used in science, technology, engineering and mathematics events for underrepresented minorities and female students.