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

Nilsson, H.; Andersson, J.; Engström, L.; Lundberg, H., et al. (2019-02-12). Experimental transition probabilities for 4p - 4d spectral lines in V II. Astronomy and Astrophysics, 622,
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DOI:
| Published | English
Authors:
Nilsson, H. ; Andersson, J. ; Engström, L. ; Lundberg, H. , et al.
Department:
Lund Observatory - Has been reorganised
Atomic Physics
Abstract:


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.

Keywords:
Atomic data ; Line: identification ; Methods: laboratory: atomic ; Techniques: spectroscopic ; Astronomy, Astrophysics and Cosmology ; Atom and Molecular Physics and Optics
ISSN:
0004-6361
LUP-ID:
ec478073-b811-4611-89e8-5f13c38fce72 | Link: https://lup.lub.lu.se/record/ec478073-b811-4611-89e8-5f13c38fce72 | Statistics

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