Time Reversal, Neutron Structure and Neutron Beta Decay

时间反转、中子结构和中子β衰变

• 批准号: 9515418
• 负责人: Timothy Chupp
• 金额: $ 81.04万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-02-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9515418&HistoricalAwards=false
• 关键词: Time; Reversal; Neutron; Structure; Beta

9515418 Chupp Experiments will be carried out using polarization observables to study the nucleon structure and to probe the standard model of particle physics. The nucleon spin structure will be studied at SLAC using deep inelastic electron scattering from polarized targets of H, D, and 3He. At MIT/Bates at lower energy quasielastic electron scattering will be used to measure the electric form factor of the neutron using polarized 3He. These data will also provide information on the structure of the 3He nucleus. As a test of the standard model the beta decay of polarized neutrons will be studied at the NIST reactor to search for time reversal invariance violations. All of these experiments are of high scientific interest to the community. In these various activities the Michigan group will play an especially important role in the developments and improvements in the polarized targets, particularly those using optical pumping techniques. This development, carried out a Michigan, provides excellent training and educational opportunities for the students. In addition to optical pumping has several applied aspects, such as NMR imaging. ***

9515418 Chupp实验将利用极化观测量来研究核子结构和探测粒子物理学的标准模型。 核子自旋结构将在SLAC使用H，D和3 He极化靶的深度非弹性电子散射进行研究。 在麻省理工学院/贝茨在较低的能量准弹性电子散射将被用来测量使用极化3 He的中子的电形状因子。 这些数据还将提供有关3 He核结构的信息。 作为对标准模型的检验，将在NIST反应堆上研究极化中子的β衰变，以寻找时间反演不变性的破坏。 所有这些实验都对社区具有高度的科学兴趣。 在这些不同的活动中，密歇根小组将在偏振目标的开发和改进方面发挥特别重要的作用，特别是那些使用光学泵浦技术的目标。 这一发展，进行了密歇根州，为学生提供了良好的培训和教育机会。 除了光泵浦之外，它还有几个应用方面，例如NMR成像。 ***