Transition Probabilities in the Iron Atom

铁原子的跃迁概率

• 批准号: 8713904
• 负责人: Ward Whaling
• 金额: $ 7.08万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-12-01 至 1990-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8713904&HistoricalAwards=false
• 关键词: Transition; Probabilities; Iron; Atom

Whaling will use the Kitt Peak Fourier Transform Spectrometer to measure transition probabilities for about 4000 spectral lines of neutral iron (FeI). These lines abound in the solar spectrum and in many stellar spectra. Although such measurements have been made for years, the astronomical needs have increased to a point requiring this automated way to measure the lines. Most of our knowledge of stars is derived from their spectra. But the spectra can be interpreted only if we have sufficient knowledge of the atoms that cause the spectral lines. One of the most important atoms is iron because it has many spectral lines in many spectral regions of most stellar spectra. Far too few of the lines are now ready to be interpreted. This award is to support experimental work at the Kitt Peak National Observatory's Fourier Transform Spectrometer in order to measure the properties of about 4000 spectral lines of neutral iron atoms.

捕鲸将使用基特峰傅里叶变换光谱仪， 测量大约4000条光谱线的跃迁概率， 中性铁（FeI）。 这些谱线在太阳光谱中比比皆是， 在许多恒星光谱中。 尽管这样的测量已经被 多年来，天文需求已经增加到一个点， 需要这种自动化的方式来测量线条。 我们对恒星的大部分认识都来自于它们的光谱。 但是只有当我们有足够的 关于产生谱线的原子的知识。 之一 最重要的原子是铁，因为它有许多光谱线 在大多数恒星光谱的许多光谱区域。 太少的 这些线现在可以被解释了。 这个奖项是为了 支持基特峰国家天文台的实验工作， 傅里叶变换光谱仪，以测量性能 大约4000条中性铁原子的光谱线。