Absolute transition probabilities in vanadium I and the solar abundance of vanadium

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Abundance, Solar Spectra, Sun, Transition Probabilities, Vanadium, Emission Spectra, Hyperfine Structure, Laser Induced Fluorescence, Spectral Line Width

Scientific paper

The radiative lifetimes of 39 levels in V I have been measured by the method of laser-induced fluorescence from sputtered metal vapor. Emission branching ratios have been measured for these levels to determine absolute transition probabilities for 208 lines in the wavelength range 3180 Å to 16,400 Å. These transition probabilities are used together with high quality solar spectra to derive an improved solar abundance of vanadium, AV = 3.99±0.01. Hyperfine structure effects were included in the abundance calculation.

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