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Radiative lifetime measurements and oscillator strengths of astrophysical interest in HoIII

Zhang, Zhiguo ; Somesfalean, Gabriel LU ; Svanberg, Sune LU ; Palmeri, P ; Quinet, P and Biemont, E (2002) In Astronomy & Astrophysics 384(1). p.364-370
Abstract
Radiative lifetimes of three long-lived levels belonging to the 4f(10)5d configuration of Ho III have been measured, for the first time, using the time-resolved laser-induced fluorescence technique. A good agreement between the experimental lifetimes and theoretical results obtained within a multiconfigurational pseudo-relativistic Hartree-Fock (HFR) approach including core-polarization (CP) effects is observed provided an adequate scaling factor is applied to the <4f&VERBAR;r&VERBAR;5d> transition matrix element. From the comparison theory-experiment, it has been possible to assess the reliability of the oscillator strengths of the 4f-5d transitions of astrophysical interest, particularly for the lines depopulating the... (More)
Radiative lifetimes of three long-lived levels belonging to the 4f(10)5d configuration of Ho III have been measured, for the first time, using the time-resolved laser-induced fluorescence technique. A good agreement between the experimental lifetimes and theoretical results obtained within a multiconfigurational pseudo-relativistic Hartree-Fock (HFR) approach including core-polarization (CP) effects is observed provided an adequate scaling factor is applied to the <4f&VERBAR;r&VERBAR;5d> transition matrix element. From the comparison theory-experiment, it has been possible to assess the reliability of the oscillator strengths of the 4f-5d transitions of astrophysical interest, particularly for the lines depopulating the levels considered in the present work. The present results fill in a gap concerning the f-values of doubly ionized holmium and are needed for a quantitative evaluation of the holmium abundance in some peculiar stars. (Less)
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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
atomic processes, stars : chemically peculiar, atomic data
in
Astronomy & Astrophysics
volume
384
issue
1
pages
364 - 370
publisher
EDP Sciences
external identifiers
  • wos:000174185500035
  • scopus:0036494804
ISSN
0004-6361
DOI
10.1051/0004-6361:20020014
language
English
LU publication?
yes
id
a0146bc9-e755-445c-809a-a84372e063e2 (old id 342640)
date added to LUP
2016-04-01 17:06:56
date last changed
2022-02-13 02:48:33
@article{a0146bc9-e755-445c-809a-a84372e063e2,
  abstract     = {{Radiative lifetimes of three long-lived levels belonging to the 4f(10)5d configuration of Ho III have been measured, for the first time, using the time-resolved laser-induced fluorescence technique. A good agreement between the experimental lifetimes and theoretical results obtained within a multiconfigurational pseudo-relativistic Hartree-Fock (HFR) approach including core-polarization (CP) effects is observed provided an adequate scaling factor is applied to the &lt;4f&amp;VERBAR;r&amp;VERBAR;5d&gt; transition matrix element. From the comparison theory-experiment, it has been possible to assess the reliability of the oscillator strengths of the 4f-5d transitions of astrophysical interest, particularly for the lines depopulating the levels considered in the present work. The present results fill in a gap concerning the f-values of doubly ionized holmium and are needed for a quantitative evaluation of the holmium abundance in some peculiar stars.}},
  author       = {{Zhang, Zhiguo and Somesfalean, Gabriel and Svanberg, Sune and Palmeri, P and Quinet, P and Biemont, E}},
  issn         = {{0004-6361}},
  keywords     = {{atomic processes; stars : chemically peculiar; atomic data}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{364--370}},
  publisher    = {{EDP Sciences}},
  series       = {{Astronomy & Astrophysics}},
  title        = {{Radiative lifetime measurements and oscillator strengths of astrophysical interest in HoIII}},
  url          = {{https://lup.lub.lu.se/search/files/4879142/2371293.pdf}},
  doi          = {{10.1051/0004-6361:20020014}},
  volume       = {{384}},
  year         = {{2002}},
}