Anapole Moment Studies in Francium

钫的阿纳波矩研究

• 批准号: 0653223
• 负责人: Luis Orozco
• 金额: --
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2010-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0653223&HistoricalAwards=false
• 关键词: Anapole; Moment; Studies; Francium

The weak force is responsible for the beginning of the solar cycle, the conversion of protons into neutrons that then allow the production of Helium. The weak force, contrary to the other forces of nature, is not the same when viewed with different systems of coordinates; this means that it does not conserve parity, giving us a unique signature for its manifestation. This research program will study the weak interactions among the components of the nucleus as it manifests itself in parity non conservation on atomic properties. The experiment involves the heaviest alkali atom: francium, to ensure a large number of protons and neutrons in the nucleus, as well as the possibility to understand and manipulate the atomic properties of the atom. The strategy for measurement requires microwave spectroscopy of laser-cooled and trapped francium atoms on-line with TRIUMF accelerator. The results with a chain of isotopes will broaden our understanding of the weak interaction in the nucleus.The research will be carried with the help of two graduate students in the boundary between Nuclear Physics and Atomic Molecular and Optical Physics. This is part of an international collaboration that will take place at TRIUMF in Vancouver, Canada. Undergraduates will participate in the research effort during the academic year, and in the summer. International collaborations include a program for undergraduate research in conjunction with the Sociedad Mexicana de Fisica.

弱力是太阳活动周期开始的原因，质子转化为中子，然后产生氦。弱力与其他自然力相反，在不同的坐标系下观察时是不一样的;这意味着它不守恒，给了我们一个独特的表现形式。这个研究计划将研究原子核的组成部分之间的弱相互作用，因为它表现在原子性质的宇称不守恒中。该实验涉及最重的碱金属原子：<$，以确保原子核中有大量的质子和中子，以及理解和操纵原子的原子性质的可能性。测量的策略需要与TRIUMF加速器的激光冷却和囚禁的<$原子的微波光谱在线。同位素链的结果将拓宽我们对核中弱相互作用的理解。这项研究将在核物理与原子分子和光学物理之间的边界上的两名研究生的帮助下进行。这是将在加拿大温哥华的TRIUMF进行的国际合作的一部分。本科生将在学年和夏季参加研究工作。国际合作包括与Sociedad Mexicana de Fisica合作的本科生研究计划。