Radiative lifetime and oscillator strength determinations in Sm III

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Radiative lifetime and oscillator strength determinations in Sm III. / Biémont, E; Garnir, H P; Litzén, Ulf; Nielsen, Krister; Quinet, P; Svanberg, Sune; Wahlgren, Glenn; Zhang, Zhiguo.

In: Astronomy & Astrophysics, Vol. 399, No. 1, 2003, p. 343-349.

Research output: Contribution to journalArticle

Harvard

Biémont, E, Garnir, HP, Litzén, U, Nielsen, K, Quinet, P, Svanberg, S, Wahlgren, G & Zhang, Z 2003, 'Radiative lifetime and oscillator strength determinations in Sm III', Astronomy & Astrophysics, vol. 399, no. 1, pp. 343-349. https://doi.org/10.1051/0004-6361:20021797

APA

Biémont, E., Garnir, H. P., Litzén, U., Nielsen, K., Quinet, P., Svanberg, S., ... Zhang, Z. (2003). Radiative lifetime and oscillator strength determinations in Sm III. Astronomy & Astrophysics, 399(1), 343-349. https://doi.org/10.1051/0004-6361:20021797

CBE

Biémont E, Garnir HP, Litzén U, Nielsen K, Quinet P, Svanberg S, Wahlgren G, Zhang Z. 2003. Radiative lifetime and oscillator strength determinations in Sm III. Astronomy & Astrophysics. 399(1):343-349. https://doi.org/10.1051/0004-6361:20021797

MLA

Vancouver

Author

Biémont, E ; Garnir, H P ; Litzén, Ulf ; Nielsen, Krister ; Quinet, P ; Svanberg, Sune ; Wahlgren, Glenn ; Zhang, Zhiguo. / Radiative lifetime and oscillator strength determinations in Sm III. In: Astronomy & Astrophysics. 2003 ; Vol. 399, No. 1. pp. 343-349.

RIS

TY - JOUR

T1 - Radiative lifetime and oscillator strength determinations in Sm III

AU - Biémont, E

AU - Garnir, H P

AU - Litzén, Ulf

AU - Nielsen, Krister

AU - Quinet, P

AU - Svanberg, Sune

AU - Wahlgren, Glenn

AU - Zhang, Zhiguo

PY - 2003

Y1 - 2003

N2 - Radiative lifetimes of 6 levels belonging to the4f<SUP>5(<SUP>6H<SUP>deg,<SUP>6F<SUP>deg)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>6F<SUP>deg as a parent term. Larger discrepancies(53 and 37) are observed for 2 levels with <SUP>6H<SUP>degand <SUP>6F<SUP>deg, 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.

AB - Radiative lifetimes of 6 levels belonging to the4f<SUP>5(<SUP>6H<SUP>deg,<SUP>6F<SUP>deg)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>6F<SUP>deg as a parent term. Larger discrepancies(53 and 37) are observed for 2 levels with <SUP>6H<SUP>degand <SUP>6F<SUP>deg, 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.

KW - atomic processes

KW - atomic data

KW - stars: chemically peculiar

U2 - 10.1051/0004-6361:20021797

DO - 10.1051/0004-6361:20021797

M3 - Article

VL - 399

SP - 343

EP - 349

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

SN - 1432-0746

IS - 1

ER -