Experimental radiative lifetimes for highly excited states and calculated oscillator strengths for lines of astrophysical interest in singly ionized cobalt (Co II)

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Experimental radiative lifetimes for highly excited states and calculated oscillator strengths for lines of astrophysical interest in singly ionized cobalt (Co II)

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Publication Article, peer reviewed scientific
Title Experimental radiative lifetimes for highly excited states and calculated oscillator strengths for lines of astrophysical interest in singly ionized cobalt (Co II)
Author(s) Quinet, Pascal ; Fivet, Vanessa ; Palmeri, Patrick ; Engström, Lars ; Hartman, Henrik ; Lundberg, Hans ; Nilsson, Hampus
Date 2016
English abstract
This work reports new experimental radiative lifetimes and calculated oscillator strengths for transitions of astrophysical interest in singly ionized cobalt. More pre- cisely, nineteen radiative lifetimes in Co+ have been measured with the time-resolved laser-induced fluorescence technique using one- and two-step excitations. Out of these, seven belonging to the high lying 3d7(4F)4d configuration in the energy range 90697 - 93738 cm􀀀1 are new, and the other twelve from the 3d7(4F)4p configuration with energies between 45972 and 49328 cm􀀀1 are compared with previous measurements. In addition, a relativistic Hartree-Fock model including core-polarization e ects has been employed to compute transition rates. Supported by the good agreement between theory and experiment for the lifetimes, new reliable transition probabilities and os- cillator strengths have been deduced for 5080 Co ii transitions in the spectral range 114- 8744 nm.
DOI http://dx.doi.org/10.1093/mnras/stw1900 (link to publisher's fulltext.)
Publisher Oxford
Host/Issue Monthly Notices of the Royal Astronomical Society;4
Volume 462
ISSN 1365-2966
Pages 3912-3917
Language eng (iso)
Subject(s) atomic data
atomic processes
Sciences
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/21247 (link to this page)

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