Anapole Moment Studies in Francium

钫的阿纳波矩研究

• 批准号: 0354956
• 负责人: Luis Orozco
• 金额: $ 43.2万
• 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: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2007-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0354956&HistoricalAwards=false
• 关键词: Anapole; Moment; Studies; Francium

The researchers will conduct a measurement of the anapole moment in francium, the heaviest of the alkali metals, in an optical trap. The anapole moment of a nucleus is a parity non-conserving, time reversal conserving moment that arises from weak interactions between the nucleons. It can be detected by measuring the change in the transition rate of an electric dipole atomic transition in the ground state hyperfine levels in the presence of a right and left handed coordinate systems.The experiment requires trapping francium atoms on line with an accelerator, cool and transporting them to a second science chamber where the atoms will be placed at the anti-node of a standing microwave cavity. The measurement of an anapole moment is a unique probe for neutral weak interactions inside the nucleus. This proposal combines precision measurement techniques from atomic molecular and optical physics with the forefront understanding of low energy nuclear structure for the elucidation of the weak interaction.This research will involve graduate students and postdoctoral research associates working closely with the faculty members involved.

研究人员将在光学陷阱中对碱金属最重的法兰克（Francium）进行Anapole时矩的测量。核的Anapole力矩是奇偶校验不稳定的，时间逆转的矩，这是由核子之间的弱相互作用产生的。可以通过在存在左右左手坐标系的存在下测量电偶极原子过渡的过渡速率的变化来检测到这一点。该实验需要将Francium Atoms与加速器一致，冷却并将其运输到第二个科学室，将原子放在站立的微量波动的抗node node node node。 Anapole矩的测量是对核内中性弱相互作用的独特探针。该提案结合了原子分子和光学物理学的精确测量技术，以及对低能核结构的最前沿，以阐明弱相互作用。这项研究将涉及研究生和博士后研究协会与与涉及的教职员工密切合作的研究生。