GOALI - Spin Physics for Hyperpolarized MRI

在这个GOALI计划中，PI正在系统地研究He-3和He-129通过自旋交换光泵浦有效超极化的关键物理过程。 测量的重点是自旋交换和自旋弛豫截面的确定，在高缓冲气体压力下的光泵浦，货车德瓦尔斯分子在高压电化学电池中的作用，光在光学厚蒸汽中的传输，以及使物种脱附的弛豫过程。 这项研究是由来自威斯康星州大学和磁成像技术公司（MITI）的合作者进行的，MITI是一家新成立的公司，专门从事超极化惰性气体源的商业化，用于医疗诊断。 这些实验由学生进行，部分在大学工作，部分在公司实验室工作。 部分资金由多学科活动办公室提供。

In this GOALI program the PI's are pursuing systematic studies of the key physical processes underlying the efficient hyperpolarization of He-3 and Xe-129 by spin- exchange optical pumping. Measurements focus on the determination of spin-exchange and spin-relaxation cross sections, optical pumping at high buffer gas pressures, the role of van der Waals molecules in high-pressure Xe cells, light transport in optically thick vapors, and relaxation processes which depolarize the species. This research is conducted by collaborators from the University of Wisconsin and Magnetic Imaging Technologies Incorporated (MITI), a newly-established company specializing in the commercialization of hyper-polarized noble-gas sources for use in medical diagnostics. The experiments are conducted by students working partly at the university and partly at the company laboratories. Partial funding is provided by the Office of Multidisciplinary Activities (OMA).