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New f-values in neutral lead obtained by time-resolved laser spectroscopy, and astrophysical applications

Biemont, E ; Garnir, H. P ; Palmeri, P ; Li, Z. S and Svanberg, Sune LU (2000) In Monthly Notices of the Royal Astronomical Society 312(1). p.116-122
Abstract
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)(0)degrees, a refined value of the lead abundance in the solar photosphere is deduced: A(Pb) = 2.00 +/- 0.06 on the usual logarithmic scale, allowing the resolution of the long-standing discrepancy previously... (More)
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)(0)degrees, a refined value of the lead abundance in the solar photosphere is deduced: A(Pb) = 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. (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Monthly Notices of the Royal Astronomical Society
volume
312
issue
1
pages
116 - 122
publisher
Oxford University Press
external identifiers
  • scopus:0001005387
ISSN
1365-2966
DOI
10.1046/j.1365-8711.2000.03094.x
language
English
LU publication?
yes
id
797e4e7a-c2f3-4464-9a42-bea9c4642c92 (old id 2257625)
date added to LUP
2016-04-04 07:06:05
date last changed
2020-12-29 03:14:13
@article{797e4e7a-c2f3-4464-9a42-bea9c4642c92,
  abstract     = {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)(0)degrees, a refined value of the lead abundance in the solar photosphere is deduced: A(Pb) = 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.},
  author       = {Biemont, E and Garnir, H. P and Palmeri, P and Li, Z. S and Svanberg, Sune},
  issn         = {1365-2966},
  language     = {eng},
  number       = {1},
  pages        = {116--122},
  publisher    = {Oxford University Press},
  series       = {Monthly Notices of the Royal Astronomical Society},
  title        = {New f-values in neutral lead obtained by time-resolved laser spectroscopy, and astrophysical applications},
  url          = {https://lup.lub.lu.se/search/ws/files/5122499/2297078.pdf},
  doi          = {10.1046/j.1365-8711.2000.03094.x},
  volume       = {312},
  year         = {2000},
}