Reference : Theoretical and experimental lifetime determination in singly ionized neodymium (Nd II)
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
http://hdl.handle.net/2268/27000
Theoretical and experimental lifetime determination in singly ionized neodymium (Nd II)
English
Xu, H. L. [> > > >]
Svanberg, S. [> > > >]
Cowan, R. D. [> > > >]
Lefèbvre, P.-H. [ > > ]
Quinet, Pascal mailto [Université de Liège - ULg > Département de physique > Physique nucléaire, atomique et spectroscopie >]
Biémont, Emile mailto [Université de Liège - ULg > Département de physique > Physique nucléaire, atomique et spectroscopie >]
1-Dec-2003
Monthly Notices of the Royal Astronomical Society
Blackwell Publishing Ltd
346
2
433-440
Yes (verified by ORBi)
International
0035-8711
Oxford
[en] atomic data ; atomic processes ; stars : chemically peculiar
[en] Radiative lifetime measurements were performed with time-resolved laser-induced fluorescence techniques for 24 levels of Nd II in the energy range 20 500- 32 500 cm(-1). For 17 levels, no previous experimental data exist. These results have allowed the testing of new theoretical calculations with the relativistic Hartree-Fock method taking configuration interactions and core-polarization effects into account, and a satisfying agreement has been found for this complex ion. A new set of calculated oscillator strengths, accurate within a few per cent for the strongest transitions, is presented for 107 lines of astrophysical interest appearing in the wavelength range 358.0-1100.0 nm. These results will be useful to evaluate abundance values of neodymium in chemically peculiar stars in relation with cosmochronology.
Researchers ; Professionals
http://hdl.handle.net/2268/27000

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