Fe I oscillator strengths for transitions from high-lying odd-parity levels

(2) Department of Physics; (3) Observational Astrophysics; A. Guzman (2); Astronomy; Department of Physics; E .A. Den Hartog (2); Imperial College London (UK); J. C. Pickering (1); J. E. Lawler (2); M. P. Ruffoni (1)

arxiv: 1710.07571 · v1 · pith:7EKKP5W3new · submitted 2017-10-20 · 🌌 astro-ph.SR

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

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Imperial College London (UK) (2) Department of Physics University of Wisconsin-Madison (USA) (3) Observational Astrophysics Department of Physics Astronomy Uppsala University (Sweden))

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keywords levelsenergyexperimentallifetimesmeasurementsodd-parityoscillatorstrengths

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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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