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arXiv 1810.04533physics.atom-phastro-ph.GA
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P II紫外跃迁的振子强度--1308 Ω多重态

Oscillator Strengths for Ultraviolet Transitions in P II -The Multiplet at 1308 Å

M. S. Brown, R. B. Alkhayat, R. E. Irving, N. Heidarian, J. Bancroft Brown, S. R. Federman, S. Cheng, L. J. Curtis

摘要:

我们报告的寿命,分支分数,和由此产生的振子强度内的P II多重态(3s 23 p2 3 P-3s 3 p3 3 Po)在1308 Ω的过渡。这些全面的束箔测量,这是目前实验上最精确的一套,解决了早期的实验和理论结果的差异。由λ1308导出的星际磷丰度现在可以更有信心地解释。在我们的测量过程中,我们还获得了一个实验寿命的3 p4 s 3 P00水平的P IV。该寿命与现有的理论计算结果吻合得很好。

英文摘要:

We report lifetimes, branching fractions, and the resulting oscillator strengths for transitions within the P II multiplet (3s23p2 3P - 3s3p3 3Po) at 1308 Å. These comprehensive beam-foil measurements, which are the most precise set currently available experimentally, resolve discrepancies involving earlier experimental and theoretical results. Interstellar phosphorus abundances derived from λ1308 can now be interpreted with greater confidence. In the course of our measurements, we also obtained an experimental lifetime for the 3p4s 3P0o level of P IV. This lifetime agrees well with the available theoretical calculation.

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