Acquisition of a high-field variable-temperature SQUID magnetometer

购置高场变温 SQUID 磁力计

• 批准号: 1954973
• 负责人: Bruce Moskowitz
• 金额: $ 43.62万
• 依托单位: University of Minnesota-Twin Cities
• 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: 2020-03-15 至 2022-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1954973&HistoricalAwards=false
• 关键词: Acquisition; field; variable; temperature; SQUID

This Division of Earth Sciences Instrumentation and Facilities Program grant supports acquisition of a high field, variable temperature Magnetic Properties Measurement System that will be housed within the Institute for Rock Magnetism (IRM) at the University of Minnesota. The instrument will support studies of the magnetic properties and behavior of geologic materials over a wide range of temperatures and in variable applied fields with application to study of plate tectonics and reconstructing Earth’s pre-historic climate and environmental conditions. The instrumentation will support hands-on student training in methods of natural material magnetic analysis and have broad impact for U.S. academic research in rock and paleomagnetism given its incorporation within an existing NSF supported community facility.The magnetic properties and behavior of geologic materials at low temperatures and in variable applied fields are of fundamental importance in rock magnetism and paleomagnetism: they offer unique insights into the carriers and origins of natural remanence, and thus into important related geophysical phenomena ranging from core evolution to lithospheric dynamics. Acquisition of a highly sensitive superconducting quantum interference device based magnetometer in which samples can be subjected to high magnetic field (up to 7-Tesla) and a wide range of temperatures (from 1.8 to 1000 K) will add a new capability at the University of Minnesota Institute for Rock Magnetism. Given broad geoscience community access to the instrument through the IRM, a range of fundamental Earth materials research will be supported including studies of the fundamental physical behavior of magnetic minerals that provides information on the mixtures of magnetic minerals and distributions of particle sizes in natural bulk samples with applications in paleoenvironmental research and in characterization of paleomagnetic remanence carriers. Research on deep Earth processes, lithospheric dynamics, iron cycling in the environment, biogeomagnetism and planetary science will benefit from this acquisition.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.

地球科学仪器和设施计划拨款支持购买高场、可变温度磁特性测量系统，该系统将安装在明尼苏达大学岩石磁学研究所 (IRM) 内。该仪器将支持磁学研究。该仪器将在广泛的温度范围和不同的应用领域中研究地质材料的特性和行为，并应用于研究板块构造和重建地球的史前气候和环境条件。鉴于其纳入现有的 NSF 支持的社区设施，对美国在岩石和古地磁学方面的学术研究产生了广泛的影响。低温下和可变应用领域中地质材料的磁性和行为对于岩石磁性和古地磁学至关重要：他们对自然剩磁的载体和起源提供了独特的见解，从而对从核心演化到岩石圈动力学等重要的相关地球物理现象提供了独特的见解。这些样品可以承受高磁场（高达 7 特斯拉）和宽范围的温度（从 1.8 到 1000 K），这将为明尼苏达大学岩石磁学研究所增加一项新功能，让地球科学界能够广泛接触。通过 IRM 该仪器，将支持一系列基础地球材料研究，包括磁性矿物基本物理行为的研究，提供有关磁性矿物混合物和天然散装样品中颗粒尺寸分布的信息，并应用于古环境研究和古地磁剩磁载体表征研究将受益于此次收购。该奖项反映了 NSF 的法定使命，并通过评估被认为值得支持。利用基金会的智力优势和更广泛的影响审查标准。