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The FERRUM Project: Experimental oscillator strengths of the UV 8 multiplet and other UV transitions from the y6P levels of Fe II

Pickering, J. C.; Donnelly, M. P.; Nilsson, Hampus LU ; Hibbert, A. and Johansson, Sveneric LU (2002) In Astronomy & Astrophysics 396(2). p.715-722
Abstract
We report on experimental branching fractions (BFs) for 19 transitions from the three 3d 5( 6S)4s4p( 3P) y6P levels in Fe II, measured in Fourier transform spectra of a Penning discharge lamp and a hollow cathode lamp. The transition wavelengths span the interval between 1600 and 2850 Å. Absolute oscillator strengths ( f-values) have been derived by combining the BFs with experimental radiative lifetimes recently reported in the literature. Theoretical f-values have been calculated using configuration interaction wavefunctions. The new experimental and theoretical f-values are compared with data available in the literature and in databases. The strongest lines measured belong to the UV 8 multiplet of Fe II, which has one ground state... (More)
We report on experimental branching fractions (BFs) for 19 transitions from the three 3d 5( 6S)4s4p( 3P) y6P levels in Fe II, measured in Fourier transform spectra of a Penning discharge lamp and a hollow cathode lamp. The transition wavelengths span the interval between 1600 and 2850 Å. Absolute oscillator strengths ( f-values) have been derived by combining the BFs with experimental radiative lifetimes recently reported in the literature. Theoretical f-values have been calculated using configuration interaction wavefunctions. The new experimental and theoretical f-values are compared with data available in the literature and in databases. The strongest lines measured belong to the UV 8 multiplet of Fe II, which has one ground state transition appearing as a prominent feature at 1608 Å in interstellar spectra. The line is accompanied by a satellite at 1611 Å due to a level mixing, which is discussed in the paper. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
atomic data -- line: identification -- techniques: spectroscopic -- stars: abundances -- ISM: abundances
in
Astronomy & Astrophysics
volume
396
issue
2
pages
715 - 722
publisher
EDP Sciences
external identifiers
  • wos:000179574300037
  • scopus:0036902025
ISSN
0004-6361
DOI
10.1051/0004-6361:20021388
language
English
LU publication?
yes
id
0941f543-a37c-47c8-91b3-7b9343b750f5 (old id 118562)
date added to LUP
2007-07-13 14:58:35
date last changed
2017-11-19 04:10:36
@article{0941f543-a37c-47c8-91b3-7b9343b750f5,
  abstract     = {We report on experimental branching fractions (BFs) for 19 transitions from the three 3d 5( 6S)4s4p( 3P) y6P levels in Fe II, measured in Fourier transform spectra of a Penning discharge lamp and a hollow cathode lamp. The transition wavelengths span the interval between 1600 and 2850 Å. Absolute oscillator strengths ( f-values) have been derived by combining the BFs with experimental radiative lifetimes recently reported in the literature. Theoretical f-values have been calculated using configuration interaction wavefunctions. The new experimental and theoretical f-values are compared with data available in the literature and in databases. The strongest lines measured belong to the UV 8 multiplet of Fe II, which has one ground state transition appearing as a prominent feature at 1608 Å in interstellar spectra. The line is accompanied by a satellite at 1611 Å due to a level mixing, which is discussed in the paper.},
  author       = {Pickering, J. C. and Donnelly, M. P. and Nilsson, Hampus and Hibbert, A. and Johansson, Sveneric},
  issn         = {0004-6361},
  keyword      = {atomic data -- line: identification -- techniques: spectroscopic -- stars: abundances -- ISM: abundances},
  language     = {eng},
  number       = {2},
  pages        = {715--722},
  publisher    = {EDP Sciences},
  series       = {Astronomy & Astrophysics},
  title        = {The FERRUM Project: Experimental oscillator strengths of the UV 8 multiplet and other UV transitions from the y6P levels of Fe II},
  url          = {http://dx.doi.org/10.1051/0004-6361:20021388},
  volume       = {396},
  year         = {2002},
}