Fe I oscillator strengths for transitions from high-lying odd-parity levels
M. T. Belmonte (1), J. C. Pickering (1), M. P. Ruffoni (1), E .A. Den, Hartog (2), J. E. Lawler (2), A. Guzman (2), U. Heiter (3) ((1) Blackett, Laboratory, Physics Department, Imperial College London (UK), (2) Department, of Physics, University of Wisconsin-Madison (USA)
TL;DR
This paper provides new experimental oscillator strengths for Fe I transitions across 213 to 1033 nm, improving data accuracy and expanding the dataset with previously unreported values and lifetimes.
Contribution
It reports novel Fe I oscillator strengths and lifetimes obtained through combined spectroscopic techniques, enhancing the existing atomic data for astrophysical applications.
Findings
120 new log(gf)-values for Fe I transitions
22 previously unreported oscillator strengths
39 new radiative lifetime measurements
Abstract
We report new experimental Fe I oscillator strengths obtained by combining measurements of branching fractions measured with a Fourier Transform spectrometer and time-resolved laser-induced fluorescence lifetimes. The study covers the spectral region ranging from 213 to 1033 nm. A total of 120 experimental log(gf)-values coming from 15 odd-parity energy levels are provided, 22 of which have not been reported previously and 63 values with lower uncertainty than the existing data. Radiative lifetimes for 60 upper energy levels are presented, 39 of which have no previous measurements.
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