Acquisition of 14C and 3H counting equipment to support hydrologic, tectonic, and paleoseismic studies at Brigham Young

[111517 .尼尔森]这笔拨款为杨百翰大学（BYU）同位素研究所需的两个液体闪烁计数器和一个苯合成系统（样品制备）的费用提供部分支持。私家侦探斯蒂芬·纳尔逊（Stephen Nelson）是地质系副教授。他和他在系里的同事艾伦·梅奥、罗恩·哈里斯、马修·马贝，以及他们的学生和合作者将利用这个设施支持水文学、古气候和构造研究。除了NSF，杨百翰大学还分担了该系统40%的费用。计数器和样品制备设备将被安置在一个实验室中，该实验室已经包含真空线和用于稳定同位素分析的芬尼根Deltaplus同位素比质谱仪。这些计数器将主要用于测量水中的14C和3H活度以及有机物和碳酸盐材料中的14C活度。将获得一个低电平和一个超低电平计数器，以方便常规计数以及低活性材料的计数。电解池将在必要时进行3H富集。在这个设施中进行的大部分工作将支持杨百翰大学地质学家及其合作者对地下水系统、古气候研究、估计构造隆起率和断层滑动率的研究。杨百翰大学的其他院系为该设施提供了大量支持，预计该设施将允许其他院系的教师和学生扩展和增强他们的研究能力。该设施将是犹他州独有的，预计将支持与犹他州和附近州的同事在地球科学方面的额外合作研究

0111517NelsonThis grant provides partial support for the cost of acquiring two liquid scintillation counters and a benzene synthesis system [sample preparation] for isotopic studies at Brigham Young University [BYU]. The PI, Stephen Nelson, is an Associate Professor in the Department of Geology. He and his colleagues in the department, Alan Mayo, Ron Harris, and Matthew Mabey, their students and collaborators will use this facility in support of hydrology, paleoclimate, and tectonic studies. In addition to NSF, BYU is sharing 40% of the cost for this system. The counters and sample preparation facilities will be housed in a laboratory that already contains vacuum lines and a Finnigan Deltaplus isotope ratio mass spectrometer for stable isotope analysis. These counters will be used primarily to make measurements of 14C and 3H activity in water and 14C activity in organic matter and carbonate materials. One low level and one ultra low level counter will be acquired to facilitate both routine counting as well as counting of low activity materials. Electrolysis cells will be constructed to permit 3H enrichment where necessary. A majority of the work conducted in this facility will support studies of ground water systems, paleoclimate studies, estimates tectonic uplift rates, and fault slip rate investigations by BYU geologists and their collaborators. Other departments at BYU provided substantial support for the facility, and it is anticipated that this facility will permit faculty and students from other departments to expand and augment their research capabilities. The facility will be unique to Utah and it is expected to support additional collaborative studies in the geosciences with colleagues in Utah and nearby states.***