Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mnras.312..116b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 312, Issue 1, pp. 116-122.
Astronomy and Astrophysics
Astronomy
35
Atomic Data, Methods: Laboratory, Sun: Abundances, Sun: Photosphere, Meteors, Meteorites
Scientific paper
Natural radiative lifetimes have been measured for three odd-parity levels of neutral lead using time-resolved UV laser-induced fluorescence from a laser-produced plasma. These new lifetimes, as well as additional recent values obtained by laser spectroscopy, combined with theoretical branching ratios deduced from a relativistic Hartree-Fock calculation taking core polarization effects into account, have allowed the deduction of a new set of accurate f-values of astrophysical interest. Using the new lifetime value for 6p7s (1/2,1/2) deg0, a refined value of the lead abundance in the solar photosphere is deduced: APb = 2.00+/-0.06 on the usual logarithmic scale, allowing the resolution of the long-standing discrepancy previously observed between the solar photosphere and meteorites.
Biémont É.
Garnir H. P.
Li Selina Z.
Palmeri Patrick
Svanberg Sune
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