Radiative lifetime and oscillator strength determinations in Sm III
(2003) In Astronomy & Astrophysics 399(1). p.343-349- Abstract
- Radiative lifetimes of 6 levels belonging to the4f<SUP>5</SUP>(<SUP>6</SUP>H<SUP>deg</SUP>,<SUP>6</SUP>F<SUP>deg</SUP>)5d configuration of Sm III have beenmeasured for the first time using a time-resolved laser-inducedfluorescence technique. Experimental data have been compared withsemi-empirical calculations. The agreement is excellent for 4 levelswith <SUP>6</SUP>F<SUP>deg</SUP> as a parent term. Larger discrepancies(53 and 37) are observed for 2 levels with <SUP>6</SUP>H<SUP>deg</SUP>and <SUP>6</SUP>F<SUP>deg</SUP>, respectively, as a parent term and areexplainable by strong mixing and cancellation effects... (More)
- Radiative lifetimes of 6 levels belonging to the4f<SUP>5</SUP>(<SUP>6</SUP>H<SUP>deg</SUP>,<SUP>6</SUP>F<SUP>deg</SUP>)5d configuration of Sm III have beenmeasured for the first time using a time-resolved laser-inducedfluorescence technique. Experimental data have been compared withsemi-empirical calculations. The agreement is excellent for 4 levelswith <SUP>6</SUP>F<SUP>deg</SUP> as a parent term. Larger discrepancies(53 and 37) are observed for 2 levels with <SUP>6</SUP>H<SUP>deg</SUP>and <SUP>6</SUP>F<SUP>deg</SUP>, respectively, as a parent term and areexplainable by strong mixing and cancellation effects occurring in theline strength calculations which are responsible of instabilitiesoccurring in the lifetimes considered as a function of J value withinthe term. Branching ratios for the lines depopulating the levels ofinterest have been measured by Fourier transform spectroscopy. A firstset of oscillator strengths has been deduced for this ion. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/130589
- author
- Biémont, E ; Garnir, H P ; Litzén, Ulf LU ; Nielsen, Krister LU ; Quinet, P ; Svanberg, Sune LU ; Wahlgren, Glenn LU and Zhang, Zhiguo
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- atomic processes, atomic data, stars: chemically peculiar
- in
- Astronomy & Astrophysics
- volume
- 399
- issue
- 1
- pages
- 343 - 349
- publisher
- EDP Sciences
- external identifiers
-
- wos:000180827300042
- scopus:0037323698
- ISSN
- 0004-6361
- DOI
- 10.1051/0004-6361:20021797
- language
- English
- LU publication?
- yes
- id
- b4846cfc-f08a-4b2e-bbf5-a7c244c5a5fe (old id 130589)
- date added to LUP
- 2016-04-01 15:36:51
- date last changed
- 2024-01-10 17:26:44
@article{b4846cfc-f08a-4b2e-bbf5-a7c244c5a5fe,
abstract = {{Radiative lifetimes of 6 levels belonging to the4f<SUP>5</SUP>(<SUP>6</SUP>H<SUP>deg</SUP>,<SUP>6</SUP>F<SUP>deg</SUP>)5d configuration of Sm III have beenmeasured for the first time using a time-resolved laser-inducedfluorescence technique. Experimental data have been compared withsemi-empirical calculations. The agreement is excellent for 4 levelswith <SUP>6</SUP>F<SUP>deg</SUP> as a parent term. Larger discrepancies(53 and 37) are observed for 2 levels with <SUP>6</SUP>H<SUP>deg</SUP>and <SUP>6</SUP>F<SUP>deg</SUP>, respectively, as a parent term and areexplainable by strong mixing and cancellation effects occurring in theline strength calculations which are responsible of instabilitiesoccurring in the lifetimes considered as a function of J value withinthe term. Branching ratios for the lines depopulating the levels ofinterest have been measured by Fourier transform spectroscopy. A firstset of oscillator strengths has been deduced for this ion.}},
author = {{Biémont, E and Garnir, H P and Litzén, Ulf and Nielsen, Krister and Quinet, P and Svanberg, Sune and Wahlgren, Glenn and Zhang, Zhiguo}},
issn = {{0004-6361}},
keywords = {{atomic processes; atomic data; stars: chemically peculiar}},
language = {{eng}},
number = {{1}},
pages = {{343--349}},
publisher = {{EDP Sciences}},
series = {{Astronomy & Astrophysics}},
title = {{Radiative lifetime and oscillator strength determinations in Sm III}},
url = {{https://lup.lub.lu.se/search/files/4432613/624162.pdf}},
doi = {{10.1051/0004-6361:20021797}},
volume = {{399}},
year = {{2003}},
}