Experimental and theoretical radiative decay rates for highly excited ruthenium atomic levels and the solar abundance of ruthenium

Details Experimental and theoretical radiative decay rates for highly excited ruthenium atomic levels and the solar abundance of ruthenium Experimental and theoretical radiative decay rates for highly excited ruthenium atomic levels and the solar abundance of ruthenium

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mnras.396.2124f&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 396, Issue 4, pp. 2124-2132.

Astronomy and Astrophysics

Astronomy

4

Atomic Data, Atomic Processes, Sun: Abundances

Scientific paper

The solar photospheric abundance of ruthenium is revised on the basis of a new set of oscillator strengths derived for RuI transitions with wavelengths in the spectral range 2250-4710 Å. The new abundance value (in the usual logarithmic scale where the solar hydrogen abundance is equal to 12.00), ARu = 1.72 +/- 0.10, is in agreement with the most recent meteoritic result, ARu = 1.76 +/- 0.03. The accuracy of the transition probabilities, obtained using a relativistic Hartree-Fock model including core-polarization effects, has been assessed by comparing the theoretical lifetimes with previous experimental results. A comparison is also made with new measurements performed in this work by the time-resolved laser-induced fluorescence spectroscopy for 10 highly excited odd-parity levels of RuI.

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