MRI: Acquisition of a Thermal Ionization Mass Spectrometer (TIMS) for Multi-disciplinary Research and Student Training at UH

MRI：购买热电离质谱仪 (TIMS)，用于夏威夷大学的多学科研究和学生培训

• 批准号: 2018807
• 负责人: Aaron Pietruszka
• 金额: $ 62.46万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2018807&HistoricalAwards=false
• 关键词: MRI; Acquisition; Thermal; Ionization; Mass

This award supports the acquisition of a state-of-the-art Thermal Ionization Mass Spectrometer (TIMS) for isotopic measurements applicable to a wide range of cutting-edge research projects in the Geosciences. The instrument will be integrated into the existing Isotope Lab of the University of Hawai‘i at Mānoa (UHM). An interdisciplinary group of scientists, ranging from students to senior researchers affiliated with UHM and other organizations nationwide and internationally, will use the TIMS for ground-breaking research in Earth and Ocean sciences, such as volcanic processes and sealevel rise. The modern technology of the TIMS will allow our users to make measurements at up to an order of magnitude better precision, while significantly reducing the sample material needed, and dramatically increasing the research applications that can be addressed. This instrument will be used to train the next generation of isotope researchers, continuing a long tradition of successfully educating students and post-doctoral scholars at UHM. The PIs actively participate in department efforts to increase STEM participation by underrepresented groups, offering isotope research training to undergraduates in REU programs.A modern TIMS will fundamentally transform the capabilities for isotope research at the University of Hawai‘i at Mānoa. This instrument will feature two major new types of technology: (1) a suite of Faraday current amplifiers that allow for the precise and accurate measurement of small ion beams, and (2) multiple ion counting (MIC) capability. Together these new features will enable exciting new research opportunities by: (1) significantly reducing sample sizes, (2) providing the highest achievable precision for Faraday detector isotopic measurements at a wide range of sample sizes, and (3) improving temporal resolution (due to smaller sample sizes and better counting statistics) for U-series isotopic measurements using MIC instead of inefficient peak jumping on a single ion counter. The instrument will be used to measure Sr-Nd-Pb radiogenic isotope ratios, Cd stable isotope ratios, and ratios of the short-lived isotopes of the U decay series. These isotopic systems will be used to perform cutting-edge research into the magmatic processes and the internal structure of volcanoes, the composition, structure, and dynamics of the Earth’s crust and mantle, the chronology of significant events through recent human and geological history, such as volcanic eruptions and coral archives of sea level change, and the interaction between ocean water masses and groundwater pathways.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项支持获得最先进的热电离质谱仪（TIMS）的同位素测量，适用于地球科学中的各种尖端研究项目。该乐器将集成到Mānoa（UHM）的夏威夷大学现有同位素实验室。一个跨学科的科学家小组，从学生到全国和国际上的其他组织的高级研究人员，将使用TIMS进行地球和海洋科学的突破性研究，例如火山流程和海上崛起。 TIMS的现代技术将使我们的用户能够以更好的精度进行测量，同时大大减少所需的样本材料，并大大增加可以解决的研究应用程序。该乐器将用于培训下一代同位素研究人员，延续了成功教育学生和在UHM的博士后学者的悠久传统。 PI积极参与部门的努力，以增加代表性不足的群体的STEM参与，提供同位素研究培训为REU计划的本科生提供。现代TIMS从根本上改变了夏威夷大学Mānoa的同位素研究的能力。该仪器将采用两种主要的新技术类型：（1）一套Faraday电流放大器套件，可允许对小离子束进行精确和准确的测量，以及（2）多个离子计数（MIC）功能。 Together these new features will enable exciting new research opportunities by: (1) significantly reducing sample sizes, (2) providing the highest achievement precision for Faraday detector isotopic measurements at a wide range of sample sizes, and (3) improving temporary resolution (due to smaller sample sizes and better counting statistics) for U-series isotopic measurements using MIC instead of ineffective peak jumping on a single ion counter.该仪器将用于测量SR-ND-PB放射原同位素比，CD稳定同位素比以及U型衰减系列短期同位素的比率。这些同位素系统将用于对岩浆过程以及火山的内部结构进行尖端研究，地球和地形的组成，结构和动态，通过最近的人类和地质历史的重大事件的年代学，包括火山爆发以及海平面的统计范围以及海洋水上的互动以及海洋水上的互动，以及海洋水上的互动，是海平面的范围，以及对海洋水上的互动，并构成了海洋水上的互动。使用基金会的智力优点和更广泛的影响标准，认为通过评估被认为是宝贵的支持。