ORBi: Fivet V. - Experimental and theoretical radiative decay rates for highly excited ruthenium atomic levels and the solar abundance of ruthenium

Reference : Experimental and theoretical radiative decay rates for highly excited ruthenium atomic l...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/2268/26445

Title :	Experimental and theoretical radiative decay rates for highly excited ruthenium atomic levels and the solar abundance of ruthenium
Language :	English
Author, co-author :	Fivet, V. [ > > ]
	Quinet, Pascal [Université de Liège - ULg > Département de physique > Physique nucléaire, atomique et spectroscopie >]
	Palmeri, P. [ > > ]
	Biémont, Emile [Université de Liège - ULg > Département de physique > Physique nucléaire, atomique et spectroscopie >]
	Asplund, M. [ > > ]
	Grevesse, Nicolas [Université de Liège - ULg > > Département d'astrophys., géophysique et océanographie (AGO) >]
	Sauval, A. J. [ > > ]
	Engström, L. [ > > ]
	Lundberg, H. [ > > ]
	Hartman, H. [ > > ]
	Nilsson, H. [ > > ]
Publication date :	2009
Journal title :	Monthly Notices of the Royal Astronomical Society
Publisher :	Blackwell Publishing
Volume :	396
Pages :	2124-2132
Audience :	International
ISSN :	0035-8711
City :	Oxford
Country :	United Kingdom
Keywords :	[en] atomic data ; atomic processes ; Sun: abundances
Abstract :	[en] The solar photospheric abundance of ruthenium is revised on the basis of a new set of oscillator strengths derived for Ru I transitions with wavelengths in the spectral range 2250–4710 Å. The new abundance value (in the usual logarithmic scale where the solar hydrogen abundance is equal to 12.00), ARu = 1.72 ± 0.10, is in agreement with the most recent meteoritic result, ARu = 1.76 ± 0.03. The accuracy of the transition probabilities, obtained using a relativistic Hartree–Fock model including core-polarization effects, has been assessed by comparing the theoretical lifetimes with previous experimental results. A comparison is also made with new measurements performed in this work by the time-resolved laser-induced fluorescence spectroscopy for 10 highly excited odd-parity levels of Ru I
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/26445

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