Acquisition of a High Resolution Small Bore 3-Component DC SQUID Magnetometer for Paleomagnetic Research

0619467 TardunoThis重大研究仪器（MRI）计划拨款支持罗切斯特大学古地磁实验室购买高分辨率小口径3分量DC SQUID磁强计。 将获得的超导岩石磁强计是一种新的设计，它利用脉冲管制冷机技术，不需要液氦来达到低温。 小样品进入孔（6 mm）比现有系统（包括罗切斯特现有的超导岩石磁力计（SRM））小得多。 新的SRM预计将有五个更高的灵敏度。 新的SRM将支持对地球最早期磁场的研究，这些磁场记录在耐火硅酸盐矿物的单晶中，这些矿物可能在原始结晶过程中逃脱了磁性特征的变质重置。 将促进地磁场反转频率与磁场强度、形态和长期变化之间关系的研究。 对早期地球和内核的发展感兴趣的广大科学家，以及那些参与行星发电机的数值和实验模拟的科学家，都将对新SRM所促进的研究感兴趣。这项工作还将有助于科学基础设施和古地磁技术。新的小口径SRM将向国内和国际外部游客开放，并将在罗切斯特大学的教育中发挥核心作用。***

0619467TardunoThis Major Research Instrumentation (MRI) Program grant supports acquisition of a high resolution small bore 3-component DC SQUID Magnetometer for the Paleomagnetics Lab at the University of Rochester. The superconducting rock magnetocmeter (SRM) to be acquired is a new design that utilizes a pulse tube cryocooler technology and does not require liquid Helium for the attainment of cyrogenic temperatures. The small sample access bore (6 mm) is much smaller than that of existing systems, including the existing superconducting rock magnetometer (SRM) at Rochester. The new SRM is expected to have a factor of five greater sensitivity. The new SRM will support research on the Earth's earliest magnetic field as recorded in single crystals of refractory silicate minerals that have possibly escaped metamorphic resetting of their magnetic signatures acquired during original crystallization. Studies of the relationships between geomagnetic field reversal frequency and field strength, morphology, and secular variation will be facilitated. Research facilitated by the new SRM would be of interest to a broad range of scientists interested in the development of the early Earth and inner core, and those involved in numerical and experimental simulations of planetary dynamos. The work will also contribute to scientific infrastructure, and paleomagnetic techniques. The new small bore SRM will be open to national and international external visitors and will play a central role in education at the University of Rochester. ***