MRI: Development of a SERF Atomic Magnetometer for Paleomagnetic Applications

MRI：开发用于古地磁应用的 SERF 原子磁力计

• 批准号: 1039846
• 负责人: John Tarduno
• 金额: $ 35.84万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-10-01 至 2016-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1039846&HistoricalAwards=false
• 关键词: MRI; Development; SERF; Atomic; Magnetometer

1039846TardunoThis Major Research Instrumentation (MRI) Program grant supports development of an ultra-sensitive (1 x 10-16 Am2) spin-exchange relaxation-free (SERF) atomic magnetometer capable of routine measurement of all three components of the remanent magnetic moment recorded in very small Archean refractory accessory phases (e.g., zircons). Should the development prove fully successful, the SERF magnetometer will allow PI Tarduno, students and collaborators to continue the search for mineral recordation of the birth of the geomagnetic field using a technology that could have up to three orders of magnitude better measurement sensitivity than currently available SQUID sensor based rock magnetometers. Assessment of the timing of onset of core formation and dynamo activity on early Earth has implications for constraining the development of the Earth?s atmosphere and the earliest possible emergence of microbial life on Earth as the magnetic field shields the Earth from the intense cosmic radiation and the solar wind. The development will be done in collaboration with a small U.S. company, Twinleaf, and will engage a graduate student. ***

1039846 TardunoThis重大研究仪器（MRI）计划拨款支持开发超灵敏（1 x 10-16 Am 2）自旋交换弛豫自由（SERF）原子磁力计，能够常规测量记录在非常小的太古代耐火辅助相（例如，锆石）。 如果开发证明完全成功，SERF磁力计将允许PI Tarduno，学生和合作者继续使用一种技术寻找地磁场诞生的矿物记录，该技术的测量灵敏度比目前可用的SQUID传感器岩石磁力计高出三个数量级。 评估地球早期核心形成和发电机活动的开始时间对限制地球的发展有影响吗？地球磁场保护地球免受强烈的宇宙辐射和太阳风的影响，这是地球上微生物最早出现的可能。 这项开发将与一家名为Twinleaf的美国小公司合作完成，并将聘请一名研究生。 ***