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Lego Figure holding a lego telescope. Photo

Henrik Hartman

Researcher (Leave of Absence)

Lego Figure holding a lego telescope. Photo

Experimental transition probabilities for 4p - 4d spectral lines in V II

Author

  • H. Nilsson
  • J. Andersson
  • L. Engström
  • H. Lundberg
  • H. Hartman

Summary, in English


Aims. We aim to measure lifetimes of levels belonging to the 3d
3
(
4
F)4d subconfiguration in Va II, and derive absolute transition probabilities by combining the lifetimes with experimental branching fractions. Methods. The lifetimes were measured using time-resolved laser-induced fluorescence in a two-photon excitation scheme. The branching fractions were measured in intensity calibrated spectra from a hollow cathode discharge lamp, recorded with a Fourier transform spectrometer. Results. We report lifetimes for 13 levels at an energy around 73 000 cm
-1
. Absolute transition probabilities of 78 lines are derived by combining the lifetimes and branching fractions. The experimental values are compared with theoretical data from the literature.

Department/s

  • Lund Observatory - Undergoing reorganization
  • Atomic Physics

Publishing year

2019-02-12

Language

English

Publication/Series

Astronomy and Astrophysics

Volume

622

Document type

Journal article

Publisher

EDP Sciences

Topic

  • Astronomy, Astrophysics and Cosmology
  • Atom and Molecular Physics and Optics

Keywords

  • Atomic data
  • Line: identification
  • Methods: laboratory: atomic
  • Techniques: spectroscopic

Status

Published

ISBN/ISSN/Other

  • ISSN: 0004-6361