Open AccessExperimental and theoretical radiative decay rates for highly excited ruthenium atomic levels and the solar abundance of ruthenium
Author(s) -
Fivet V.,
Quinet P.,
Palmeri P.,
Biémont É.,
Asplund M.,
Grevesse N.,
Sauval A. J.,
Engström L.,
Lundberg H.,
Hartman H.,
Nilsson H.
Publication year - 2009
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2009.14761.x
Subject(s) - physics , ruthenium , atomic physics , radiative transfer , excited state , natural abundance , wavelength , abundance (ecology) , spectroscopy , polarization (electrochemistry) , isotope , optics , nuclear physics , chemistry , quantum mechanics , biochemistry , fishery , biology , catalysis
The solar photospheric abundance of ruthenium is revised on the basis of a new set of oscillator strengths derived for Ru i 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), A Ru = 1.72 ± 0.10 , is in agreement with the most recent meteoritic result, A Ru = 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 Ru i .