Development of a Neutron Polarizer Using Compressed, Optically Pumped Helium Gas

使用压缩光泵氦气开发中子偏振器

• 批准号: 9501312
• 负责人: William Snow
• 金额: $ 39.44万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-05-01 至 2002-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9501312&HistoricalAwards=false
• 关键词: Development; Neutron; Polarizer; Using; Compressed

9501312 Snow A neutron polarizer for low energy neutrons will be developed for use in fundamental symmetry tests, including tests of time reversal invariance and weak interaction coupling constants. The latter will be used to test the unitarity of the matrix describing weak transitions between the different quark- lepton sectors, which in turn tests the fundamental assumption of three generations of quarks and leptons. The polarizer will be based on neutron interactions with optically-pumped polarized helium-three. Experiments will be conducted at the National Institute of Standards and Technology research reactor. Research in this area will advance our understanding of the electroweak interaction and fundamental neutron physics, both high priority activities in contemporary nuclear physics. This project represents development, construction, and utilization of major state-of-the-art equipment and the education of graduate and undergraduate students and postdocs.***

小行星9501312 将研制一种用于低能中子的中子极化器，用于基本对称性试验，包括时间反演不变性和弱相互作用耦合常数的试验。 后者将用于检验描述不同夸克-轻子扇区之间弱跃迁的矩阵的么正性，这反过来又检验了三代夸克和轻子的基本假设。 偏振器将基于中子与光泵偏振氦-3的相互作用。 实验将在美国国家标准与技术研究所的研究反应堆中进行。 在这一领域的研究将推进我们对电弱相互作用和基本中子物理的理解，这两个在当代核物理中的高优先级活动。 该项目代表了主要先进设备的开发、建设和利用，以及研究生、本科生和博士后的教育。*