NSF-Arizona Accelerator Facility for Radioisotope Analysis

NSF-亚利桑那州放射性同位素分析加速器设施

• 批准号: 9203383
• 负责人: Douglas Donahue
• 金额: $ 90万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-08-15 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9203383&HistoricalAwards=false
• 关键词: NSF; Arizona; Accelerator; Facility; Radioisotope

This award provides support for the operation and maintenance of the NSF-University of Arizona Accelerator Mass Spectrometry (AMS) Facility. The AMS Facility at Arizona operates a tandem accelerator and associated sample preparation facilities on behalf of a wide-ranging national community of researchers who depend on it for analysis of rare cosmogenic isotopes (mainly radiocarbon or 14C) used for dating of natural samples and artifacts. The AMS technique enables uniquely sensitive analysis for radioactive 14C in extremely small samples or where the concentration is extremely low. Recent projects at the NSF-University of Arizona AMS Facility have included analysis of polar ice and lake sediment cores for paleoclimate records, definitive dating of the Shroud of Turin, dating of specific organic molecular components in fossil samples, determining exposure ages of meteorites and terrestrial erosion surfaces, dating of early American maize remains, dating of fossil human skeletal remains, general archeological dating, dating prehistoric art, as well as numerous projects in earth sciences, hydrology, atmospheric sciences, and agronomy.

该奖项为运营和维护提供支持 美国亚利桑那大学加速器质谱仪 (AMS)设施。亚利桑那州的AMS设施运行一个串联 加速器和相关的样品制备设施代表 一个广泛的国家研究人员社区， 它用于分析稀有宇宙成因同位素（主要是放射性碳或 14 C）用于天然样品和人工制品的年代测定。医疗辅助队 一种能够对放射性14 C进行独特灵敏分析的技术 在极小的样本或浓度极高的情况下 低NSF-亚利桑那大学AMS设施的最新项目 包括对极地冰和湖泊沉积物岩心的分析， 古气候记录，确定都灵裹尸布的年代， 确定化石样品中特定有机分子成分的年代， 确定陨石和陆地侵蚀的暴露年龄 表面，美国早期玉米遗骸的年代测定，化石的年代测定 人类骨骼遗骸，一般考古断代，断代 史前艺术，以及地球科学的许多项目， 水文学、大气科学和农学。