| Issue |
A&A
Volume 622, February 2019
|
|
|---|---|---|
| Article Number | A154 | |
| Number of page(s) | 6 | |
| Section | Atomic, molecular, and nuclear data | |
| DOI | https://doi.org/10.1051/0004-6361/201834795 | |
| Published online | 12 February 2019 | |
Experimental transition probabilities for 4p – 4d spectral lines in V II
1
Lund Observatory, Lund University, Box 43, 22100 Lund, Sweden
e-mail: hampus.nilsson@astro.lu.se
2
Department of Physics, University of Gothenburg, 412 96 Gothenburg, Sweden
3
Department of Physics, Lund University, Box 118, 22100 Lund, Sweden
4
Applied Mathematics and Material Science, Malmö University, 20506 Malmö, Sweden
Received:
7
December
2018
Accepted:
2
January
2019
Aims. We aim to measure lifetimes of levels belonging to the 3d3(4F)4d subconfiguration in V 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.
Key words: atomic data / line: identification / methods: laboratory: atomic / techniques: spectroscopic
© ESO 2019
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