Ion Spectroscopy

离子光谱

• 批准号: 9208226
• 负责人: David Church
• 金额: $ 24.78万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-08-01 至 1997-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9208226&HistoricalAwards=false
• 关键词: Ion; Spectroscopy

The mean lifetimes of metastable, low energy multi-charged ions are measured using trapping techniques. The ions are obtained from a cyclotron source and the intensity of decay photons measured against ion storage times. Spectroscopic measurements of forbidden as well as electric dipole allowed transitions will be carried out using the method of collinear laser-ion beam spectroscopy. Hyperfine quenching will be studied using different isotopes of the same element. The data will be compared with recent theoretical calculations using many-body perturbations theory and multi-configuration Dirac-Fock theory.

使用捕获技术测量亚稳态、低能量多电荷离子的平均寿命。 从回旋加速器源获得离子，并根据离子存储时间测量衰变光子的强度。 将使用共线激光离子束光谱法对禁止跃迁和电偶极子允许跃迁进行光谱测量。 将使用同一元素的不同同位素来研究超精细淬火。 这些数据将与最近使用多体扰动理论和多配置狄拉克-福克理论的理论计算进行比较。