Reference : Transition probabilities and lifetimes in neutral and singly ionized osmium and the Sola...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/26917
Transition probabilities and lifetimes in neutral and singly ionized osmium and the Solar osmium abundance
English
Quinet, Pascal mailto [Université de Liège - ULg > Département de physique > Physique nucléaire, atomique et spectroscopie >]
Palmeri, P. [> > > >]
Biémont, Emile mailto [Université de Liège - ULg > Département de physique > Physique nucléaire, atomique et spectroscopie >]
Jorissen, A. [> > > >]
Van Eck, S. [> > > >]
Svanberg, S. [> > > >]
Xu, H. L. [> > > >]
Plez, B. [> > > >]
Mar-2006
Astronomy and Astrophysics
Edp Sciences S A
448
3
1207-U93
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis Cedex A
[en] Sun : abundances ; atomic data ; atomic processes
[en] Radiative lifetime measurements have been performed, with a time-resolved laser-induced fluorescence technique, for 12 levels of Os I and for 9 levels of Os II. For 9 levels of Os I and 4 levels of Os II, there were no previous experimental data available. From a comparison with new theoretical calculations, taking configuration interactions and core-polarization effects into account, it has been possible to deduce oscillator strengths for 129 transitions of Os I and 137 transitions of Os II of astrophysical interest appearing in the wavelength range 180.0-870.0 nm. These results have allowed us to revise the abundance of osmium in the solar photosphere (log epsilon(Os) = 1.25 +/- 0.11). The newly derived oscillator strengths have been applied as well to derive the osmium abundance in the carbon-rich metal-poor star HD 187861.
Researchers ; Professionals
http://hdl.handle.net/2268/26917

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