Radiative lifetime measurements and oscillator strengths of astrophysical interest in HoIII
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/342640
- author
- Zhang, Zhiguo ; Somesfalean, Gabriel LU ; Svanberg, Sune LU ; Palmeri, P ; Quinet, P and Biemont, E
- organization
- publishing date
- 2002
- 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 <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.}}, 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}}, }