The branching fraction (BF) determinations were performed for 87 La i lines from 290.963 to 1078.646 nm based on the emission spectra of hollow cathode lamps recorded using the 1.0 m Fourier transform spectrometer (FTS) and are available from the digital library of National Solar Observatory on Kitt Peak, USA (http://diglib.nso.edu/). Furthermore, by combining the determined BFs with reliable lifetime values reported in literature, the transition probabilities and absolute oscillator strengths for these lines were derived.

中文翻译：

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La i 中的实验分支分数、转移概率和振荡器强度

基于使用 1.0 m 傅里叶变换光谱仪 (FTS) 记录的空心阴极灯的发射光谱，对 290.963 至 1078.646 nm 的 87 条 La i 谱线进行了分支分数 (BF) 测定，可从国家太阳天文台的数字图书馆获得在美国基特峰 (http://diglib.nso.edu/)。此外，通过将确定的 BF 与文献中报道的可靠寿命值相结合，导出了这些线的跃迁概率和绝对振荡器强度。