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

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

doi:10.1051/0004-6361/201834795

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

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

Atomic Physics

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	201834795
Journal	Astronomy and Astrophysics
Volume	622
DOIs	https://doi.org/10.1051/0004-6361/201834795
Publication status	Published - 2019 Feb 12

Subject classification (UKÄ)

Astronomy, Astrophysics and Cosmology
Atom and Molecular Physics and Optics

Free keywords

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

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10.1051/0004-6361/201834795

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title = "Experimental transition probabilities for 4p - 4d spectral lines in V II",

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",

author = "H. Nilsson and J. Andersson and L. Engstr{\"o}m and H. Lundberg and H. Hartman",

year = "2019",

month = feb,

day = "12",

doi = "10.1051/0004-6361/201834795",

language = "English",

volume = "622",

journal = "Astronomy and Astrophysics",

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TY - JOUR

T1 - Experimental transition probabilities for 4p - 4d spectral lines in V II

AU - Nilsson, H.

AU - Andersson, J.

AU - Engström, L.

AU - Lundberg, H.

AU - Hartman, H.

PY - 2019/2/12

Y1 - 2019/2/12

N2 - 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.

AB - 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.

KW - Atomic data

KW - Line: identification

KW - Methods: laboratory: atomic

KW - Techniques: spectroscopic

U2 - 10.1051/0004-6361/201834795

DO - 10.1051/0004-6361/201834795

M3 - Article

AN - SCOPUS:85061742278

SN - 0004-6361

VL - 622

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - 201834795

ER -

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

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