Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III

[en] A new set of theoretical f -values is reported for 178 Ru II transitions of astrophysical interest, involving energy levels below 58 000 cm-1. The theoretical model, including core-polarization effects, has been tested by comparing theoretical lifetimes with new measurements performed by time-resolved laser-induced fluorescence spectroscopy for 23 4d6(5D)5p odd levels of Ru II and by comparing theoretical and experimental Landé g-factors. The first set of transition probabilities is proposed for 25 strong lines depopulating the 4d55p 5,7P° terms of Ru III. The new results will allow quantitative investigations of stellar spectra and allow the astrophysicists to refine the ruthenium abundance in stars.

Disciplines :

Physics

Author, co-author :

Palmeri, Patrick

Quinet, Pascal ; Université de Mons > Faculté des Sciences > Astrophysique et spectroscopie

Fivet, Vanessa

Biémont, Emile

Cowley, C.R.

Engström, L.

Lundberg, H.

Hartman, H.

Nilsson, H.

Language :

English

Title :

Lifetime measurements in Ru II and calculated oscillator strengths in Ru II and Ru III

Publication date :

28 August 2009

Journal title :

Journal of Physics : B Atomic Molecular and Optical Physics

ISSN :

0953-4075

Publisher :

Institute of Physics Publishing, Bristol, United Kingdom

Volume :

Issue :

Pages :

1-12

Peer reviewed :

Peer Reviewed verified by ORBi

Research unit :

S804 - Astrophysique et spectroscopie
S888 - Physique atomique et Astrophysique

Available on ORBi UMONS :

since 10 July 2010

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Bibliography

Allen D M and Porto de Mello G F 2007 Astron. Astrophys. 474 221
Bergström H, Faris H, Hallstadius G W, Lundberg H, Persson A and Wahlström C G 1988 Z. Phys. D 8 17
Biémont B. 2005 Phys. Scr. T119 55
Biémont and Quinet P 2003 Phys. Scr. T105 38
Cowan R D 1970 J. Phys. 31 (C4 Suppl. n11-12 Tome) 191
Cowan R D 1981 The Theory of Atomic Structure and Spectra (Berkeley, CA: University of California Press)
Cowley C R, Hubrig S and Wahlgren G M 2008 J. Phys.: Conf. Ser. 130 012005
Cowley C R, Hubrig S, Wahlgren G, Palmeri P, Quinet P, Biémont, Schültz O and Gonzalez J F 2009 Mon. Not. R. Astron. Soc. to be submitted
Fivet V, Palmeri P, Quinet P, Biémont, Xu H L and Svanberg S 2006 Eur. Phys. J. D 37 29
Fivet V et al 2009 Mon. Not. R. Astron. Soc. at press
Fraga S, Karwowski J and Saxena K M S 1976 Handbook of Atomic Data (Amsterdam: Elsevier)
Johansson S, Joueizadeh A, Litzén U, Larsson J, Persson A, Wahlström C-G, Svanberg S, Leckrone D S and Wahlgren G M 1994 Astrophys. J. 421 809
Karlsson H, Joueizadeh A and Johansson S 2002 Phys. Scr. 66 238
Leckrone D S, Wahlgren G M and Johansson S G 1991 Astrophys. J. 377 L37
Moore C E 1971 Atomic Energy Levels NSRDS-NBS 35 (Washington, DC: US Department of Commerce)
Nilsson H, Engström L, Lundberg H, Palmeri P, Fivet V, Quinet P and Biémont 2008 Eur. Phys. J. D 49 13
Ya Orlov M and Shavrina A V 1990 Astrophysics 32 126
Quinet P, Palmeri P, Biémont E, McCurdy M M, Rieger G, Pinnington E H, Wickliffe M E and Lawler J E 1999 Mon. Not. R. Astron. Soc. 307 934
Shenstone A G and Meggers W F 1958 J. Res. Nat. Bur. Stand. 61 373
Xu H L, Persson A, Svanberg S, Blagoev K, Malcheva G, Pentchev V, Biémont, Campos J, Ortiz M and Mayo R 2004 Phys. Rev. A 70 042508
Xu H L, Svanberg S, Quinet P, Garnir H P and Biémont 2003 J. Phys. B: At. Mol. Opt. Phys. 36 4773