Precision Measurements of Transition Amplitudes in Atomic Cesium

原子铯跃迁振幅的精确测量

• 批准号: 9987984
• 负责人: Carol Tanner
• 金额: --
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-15 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9987984&HistoricalAwards=false
• 关键词: Precision; Measurements; Transition; Amplitudes; Atomic

This project consists of several experiments designed to measure atomic transition matrix elements important to the interpretation of atomic parity non-conservation (PNC) experiments. This interpretation requires accurate knowledge of atomic structure and places stringent requirements on the accuracy of atomic structure calculations. These new experiments, which will measure absolute transition strengths to high precision, should be able to determine the value of transition matrix elements accurate to 0.3%, thereby testing theoretical calculations below the current known level of 1%. While the present measurements will focus on cesium, the techniques can be extended to other atoms of interest for testing the standard model and atomic theory.

该项目由几个实验组成，旨在测量对解释原子宇称非守恒(PNC)实验重要的原子跃迁矩阵元素。这种解释需要准确的原子结构知识，并对原子结构计算的准确性提出了严格的要求。这些新的实验将测量高精度的绝对跃迁强度，应该能够确定精确到0.3%的跃迁矩阵元素的值，从而测试低于目前已知水平1%的理论计算。虽然目前的测量将集中在铯上，但这些技术可以扩展到其他感兴趣的原子，以测试标准模型和原子理论。