The Measurement of Atomic Transition Probabilities of Metal Atoms and Ions of Astrophysical Interest

具有天体物理学意义的金属原子和离子的原子跃迁概率的测量

• 批准号: 8821051
• 负责人: James Lawler
• 金额: $ 16.54万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-01-01 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8821051&HistoricalAwards=false
• 关键词: Measurement; Atomic; Transition; Probabilities; Metal

Atomic and ionic transition data are fundamental to much of astrophysical research. For example, this data is crucial for computing stellar atmosphere models and for deriving stellar elemental abundances. This data needs to be obtained experimen- tally, which the Principal Investigator proposes to do. There will be two emphases: apply existing techniques to measuring lifetimes and branching ratios of atomic and ionic transitions and extend current techniques to measuring at shorter wavelengths and on higher excitation and ionization states.

原子和离子跃迁数据是许多天体物理研究的基础。例如，这些数据对于计算恒星大气模型和得出恒星元素丰度至关重要。这一数据需要通过实验获得，这是首席调查员建议的做法。将有两个重点：将现有技术应用于测量原子和离子跃迁的寿命和分支比，并将现有技术扩展到较短波长和较高激发态和电离态的测量。