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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)
Physique Atomique et Astrophysique, Université de Mons, B-7000 Mons, Belgium; IPNAS, Université de Liège, Sart Tilman, B-4000 Liège, Belgium.
Physique Atomique et Astrophysique, Université de Mons, B-7000 Mons, Belgium.
Physique Atomique et Astrophysique, Université de Mons, B-7000 Mons, Belgium.
Department of Physics, Lund University, Box 118, SE-221 00 Lund, Sweden.
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2016 (English)In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 462, no 4, p. 3912-3917Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Oxford University Press, 2016. Vol. 462, no 4, p. 3912-3917
Keywords [en]
atomic data, atomic processes
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Natural Sciences
Identifiers
URN: urn:nbn:se:mau:diva-16059DOI: 10.1093/mnras/stw1900ISI: 000385231600033Scopus ID: 2-s2.0-84994479817Local ID: 21247OAI: oai:DiVA.org:mau-16059DiVA, id: diva2:1419581
Available from: 2020-03-30 Created: 2020-03-30 Last updated: 2023-10-27Bibliographically approved

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Hartman, HenrikNilsson, Hampus

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