Acquisition of NMR Spectrometer, Ultralow Temperature Cryostats, and Active Shielding for a 16 Tesla/120 mm RT Bore Superconducting Magnet

9977656巴雷特核磁共振（NMR）光谱是一个强大的本地探针的电子和结构性质的物质，与应用在物理学，材料科学，地质学，化学，生物学和医学。 在主要研究仪器计划的资助下，PI将创建一个独特的核磁共振系统，能够产生极高的磁场和超低温。 所提出的系统的基础是一个15.8特斯拉/ 120毫米的室温孔超导NMR磁体，最近购买的耶鲁大学。 该磁体的NMR质量规格，结合其超宽孔径和强磁场，开辟了全新的实验前沿。 主要研究仪器基金将用于购买完成系统所需的其他组件：主动屏蔽升级，定制NMR光谱仪和超低温实验低温恒温器。 该系统将进行的研究活动跨越几个不同的领域，学术部门，以及两所大学，耶鲁大学和哥伦比亚。这些项目包括：1）纳米材料的研究，例如，GaN、GaAs量子威尔斯外延薄膜; 2）小生物样品的磁共振显微镜（如小鼠和大鼠）; 3）光泵浦对某些生物样品光谱的影响，以解决长期存在的关于光合反应中心中光反应的效率和特异性的问题; 4）将各种固态NMR测量扩展到超低温，以提高灵敏度并简化光谱。 改进后的仪器将在几个方面增强学生、博士后、研究生和本科生的研究培训经验，包括最先进仪器的实践培训，以及使用该仪器进入课堂的研究项目的结果。主要研究仪器计划的资金将用于购买用于完成最先进仪器的组件。NMR系统。 该系统将由大学内以及附近大学的一系列研究人员使用。 它也将对学生的研究培训产生影响，从博士后到本科生

9977656Barrett Nuclear magnetic resonance (NMR) spectroscopy is a powerful local probe of the electronic and structural properties of matter, with applications in physics, materials science, geology, chemistry, biology, and medicine. With Major Research Instrumentation program funding, the PI will create a unique nuclear magnetic resonance system, capable of producing both extremely high magnetic fields and ultralow temperatures. The foundation of the proposed system is a 15.8 Tesla / 120 mm room temperature bore superconducting NMR magnet, recently purchased by Yale University. The NMR-quality specifications of this magnet, combined with its super-wide bore diameter and its strong field, open up entirely new experimental frontiers. The Major Research Instrumentation funds will be used to acquire the other components necessary to complete the system: an active shielding upgrade, a custom NMR spectrometer, and ultralow temperature experimental cryostats. The research activities that will be conducted with this system span several different fields, academic departments, as well as two universities, Yale and Columbia. These projects include: 1) the study of nanoscale materials, e.g., epitaxial thin films of GaN, GaAs quantum wells; 2) magnetic resonance microscopy of small biological samples (such as mice and rats); 3) the effect of optical pumping on the spectra of certain biological samples, to address long-standing questions about the efficiency and specificity of photoreactions in the photosynthetic reaction center; 4) extending a wide-variety of solid-state NMR measurements down to ultralow temperatures, to boost sensitivity and to simplify spectra. The improved instrumentation will enhance research training experiences for students, postdoctoral, graduate, and undergraduate, in several ways, including hand-on training on state-of-the-art instrumentation and the results of research projects carried out with this instrument finding its way into the classroom.Funds from the Major Research Instrumentation program will be used to acquire components that will be used to complete the state-of-the-art NMR system. The system will be used by a range of researchers within the university as well as at nearby universities. It will also have an impact on the research training of students, from post doctoral to undergraduates