MRI: Acquisition of a Thermal Ionization Mass Spectrometer for Studies of the Formation and Evolution of the Solid Earth

MRI：购买热电离质谱仪用于研究固体地球的形成和演化

• 批准号: 1827460
• 负责人: Richard Carlson
• 金额: $ 51.22万
• 依托单位: Carnegie Institution of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-10-01 至 2019-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1827460&HistoricalAwards=false
• 关键词: MRI; Acquisition; Thermal; Ionization; Mass

Acquisition of a Thermal Ionization Mass Spectrometer for Studies of the Formation and Evolution of the Solid EarthGeologic processes operate on time scales much longer than human experience. The record of these processes is recorded in the chemical and isotopic composition of Earth materials. Naturally occurring radioactive elements provide the clocks that record the sequence of events that led to the modern Earth. The primary tool used to extract this information is the mass spectrometer. This award supports acquisition of a mass spectrometer for the Department of Terrestrial Magnetism (DTM) at Carnegie Institute of Science. The new instrument will measure rocks to understand the history and nature of the Earth. It will improve the programs at DTM and will be available for scientists and students to use. Visiting scientists and students often lead their own geology research programs in the U.S. and worldwide. The new instrument will further strengthen educational opportunities for training the next generation of Earth scientists.This grant will fund the purchase of a new thermal ionization mass spectrometer for the geochemistry group at DTM. DTM has a record, dating back to the 1950`s, of developing new techniques in isotope geology and geochronology and applying them to a number of topics of importance in the geosciences. The new mass spectrometer with high-gain faraday amplifiers will expand current capabilities, particularly allowing measurement of smaller sample sizes, and will also allow high-precision isotopic analysis of the decay products of short-lived radionuclides including 142Nd, 182W and 53Cr. These systems are providing a much clearer look at how the processes that accompanied planet formation established major characteristics of Earth that persist to the present day. The requested instrument will allow isolation of incompatible measurement techniques between the new and existing instruments so that each can produce the highest quality data possible. The new instrument also will continue and expand training of the next generation of isotope geochemists in cutting edge techniques that can be used to probe fundamental questions relating to Earth formation and evolution.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.

采集热电离质谱仪，用于研究固体地质过程的形成和演变的时间比人类经验长得多得多。这些过程的记录记录在地球材料的化学和同位素组成中。天然发生的放射性元素提供了记录导致现代地球的事件的顺序的时钟。用于提取此信息的主要工具是质谱仪。该奖项支持卡内基科学学院（DTM）的质谱仪（DTM）收购。新工具将测量岩石以了解地球的历史和本质。它将改善DTM的计划，并可以供科学家和学生使用。来访的科学家和学生经常在美国和全球领导自己的地质研究计划。新工具将进一步加强培训下一代地球科学家的教育机会。该赠款将为DTM的地球化学组购买新的热电离质谱仪提供资金。 DTM的记录可以追溯到1950年代，它是开发同位素地质和地质学领域的新技术，并将其应用于地球科学中的许多重要主题。 具有高生殖法拉第放大器的新型质谱仪将扩大当前功能，尤其是允许测量较小的样本量，还将允许对短寿命放射性核素（包括142，182W和53CR）的衰减产物进行高精度的同位素分析。这些系统提供了更清楚地了解伴随行星形成的过程如何建立了当今持续存在的地球的主要特征。请求的仪器将允许在新仪器和现有仪器之间隔离不兼容的测量技术，以便每种仪器都可以产生最高质量的数据。新工具还将继续并扩大对尖端技术中下一代同位地球化学的培训，可用于探测与地球形成和进化有关的基本问题。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子和更广泛影响的评估来通过评估来获得支持的审查标准。