Experimental transition probabilities for 4p – 4d spectral lines in V II
Lund Observatory, Lund University, Box 43, 22100 Lund, Sweden
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
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