Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apjs..122..557n&link_type=abstract
The Astrophysical Journal Supplement Series, Volume 122, Issue 2, pp. 557-561.
Astronomy and Astrophysics
Astronomy
15
Atomic Data, Methods: Laboratory
Scientific paper
We report the measurement of branching fractions and absolute transition probabilities for 103 Co I spectral lines in the wavelength range between 293 and 1008 nm. Hollow cathode spectra recorded using the Fourier transform spectrometer at the National Solar Observatory are used to determine the branching fractions. An absolute scale is established using recently reported radiative lifetimes from time-resolved laser-induced fluorescence measurements. The results are for the most part in agreement with previously reported measurements but reduce the uncertainties by an average factor of 2.5. Two-thirds of the transition probabilities reported here have uncertainties between +/-5% and +/-10%. The lines studied in this work connect the low-lying even-parity levels of Co I to odd-parity levels between 28346 and 34134 cm^-1.
Kunau A. E.
Lentz L. R.
Nitz David E.
Wilson K. L.
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