Fe I oscillator strengths for lines with excitation energies between 3 and 7eV

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Abundance, Atomic Excitations, Atomic Spectra, Gratings (Spectra), Iron, Line Spectra, Oscillators, Solar Spectra, Stellar Composition, Astronomical Spectroscopy, Electron Transitions, Fourier Transformation, Laser Induced Fluorescence, Transition Probabilities

Scientific paper

Oscillator strengths of 116 Fe I lines were obtained from a combination of lifetimes measured with the laser induced fluorescence (LIF) technique and branching ratios obtained from Fourier-transform and grating spectra. Lines covering a range of excitation energies from 25 000 to 54,000/cm were chosen to enlarge the set of suitable lines for solar and stellar abundance studies. The overall uncertainties of the f-values are typically between 7% and 12%, and 29% at the most. The data are compared with literature values. The present study is a continuation of recently published Fe I measurements.

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