Lifetime measurements of the A 2Π1/2 and A 2Π3/2 states in BaF

NL-eEDM Collaboration

doi:10.1103/PhysRevA.100.052503

Lifetime measurements of the A 2Π1/2 and A 2Π3/2 states in BaF

NL-eEDM Collaboration

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Abstract

Time-resolved detection of laser-induced fluorescence from pulsed excitation of electronic states in barium monofluoride (BaF) molecules has been performed in order to determine the lifetimes of the A2Π1/2 and A2Π3/2 states. The method permits control over experimental parameters such that systematic biases in the interpretation of the data can be controlled to below 10-3 relative accuracy. The statistically limited values for the lifetimes of the A2Π1/2(ν=0) and A2Π3/2(ν=0) states are 57.1(3) and 47.9(7) ns, respectively. Although discrepancies between presently and previously measured lifetimes and theoretical values persist, the ratio of these values is in good agreement with scaling for the different excitation energies. The results serve as a benchmark for current molecular structure calculations. The investigated molecular states are of relevance for an experimental search for a permanent electric dipole moment of the electron in BaF.

Original language	English
Article number	052503
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review A
Volume	100
Issue number	5
Early online date	12 Nov 2019
DOIs	https://doi.org/10.1103/PhysRevA.100.052503
Publication status	Published - Nov 2019

Funding

The NL-eEDM consortium receives program funding (EEDM-166) from the Netherlands Organisation for Scientific Research (NWO). We thank C. J. G. Onderwater for discussions on the statistical treatment of the data.

Funders	Funder number
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Horizon 2020 Framework Programme	670168

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

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10.1103/PhysRevA.100.052503

PhysRevA.100.052503_Lifetime measurements of the A 2Π12 and A 2Π32 states in BaFFinal published version, 456 KBLicence: Article 25fa Dutch Copyright Act

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@article{17a47990ce974c5e951de1dea006c25b,

title = "Lifetime measurements of the A 2Π1/2 and A 2Π3/2 states in BaF",

abstract = "Time-resolved detection of laser-induced fluorescence from pulsed excitation of electronic states in barium monofluoride (BaF) molecules has been performed in order to determine the lifetimes of the A2Π1/2 and A2Π3/2 states. The method permits control over experimental parameters such that systematic biases in the interpretation of the data can be controlled to below 10-3 relative accuracy. The statistically limited values for the lifetimes of the A2Π1/2(ν=0) and A2Π3/2(ν=0) states are 57.1(3) and 47.9(7) ns, respectively. Although discrepancies between presently and previously measured lifetimes and theoretical values persist, the ratio of these values is in good agreement with scaling for the different excitation energies. The results serve as a benchmark for current molecular structure calculations. The investigated molecular states are of relevance for an experimental search for a permanent electric dipole moment of the electron in BaF.",

author = "P. Aggarwal and Marshall, \{V. R.\} and Bethlem, \{H. L.\} and A. Boeschoten and A. Borschevsky and M. Denis and K. Esajas and Y. Hao and S. Hoekstra and K. Jungmann and Meijknecht, \{T. B.\} and Mooij, \{M. C.\} and Timmermans, \{R. G.E.\} and A. Touwen and W. Ubachs and Vermeulen, \{S. M.\} and L. Willmann and Y. Yin and A. Zapara and \{NL-eEDM Collaboration\}",

year = "2019",

month = nov,

doi = "10.1103/PhysRevA.100.052503",

language = "English",

volume = "100",

pages = "1--5",

journal = "Physical Review A",

issn = "2469-9926",

publisher = "American Physical Society",

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TY - JOUR

T1 - Lifetime measurements of the A 2Π1/2 and A 2Π3/2 states in BaF

AU - Aggarwal, P.

AU - Marshall, V. R.

AU - Bethlem, H. L.

AU - Boeschoten, A.

AU - Borschevsky, A.

AU - Denis, M.

AU - Esajas, K.

AU - Hao, Y.

AU - Hoekstra, S.

AU - Jungmann, K.

AU - Meijknecht, T. B.

AU - Mooij, M. C.

AU - Timmermans, R. G.E.

AU - Touwen, A.

AU - Ubachs, W.

AU - Vermeulen, S. M.

AU - Willmann, L.

AU - Yin, Y.

AU - Zapara, A.

AU - NL-eEDM Collaboration

PY - 2019/11

Y1 - 2019/11

N2 - Time-resolved detection of laser-induced fluorescence from pulsed excitation of electronic states in barium monofluoride (BaF) molecules has been performed in order to determine the lifetimes of the A2Π1/2 and A2Π3/2 states. The method permits control over experimental parameters such that systematic biases in the interpretation of the data can be controlled to below 10-3 relative accuracy. The statistically limited values for the lifetimes of the A2Π1/2(ν=0) and A2Π3/2(ν=0) states are 57.1(3) and 47.9(7) ns, respectively. Although discrepancies between presently and previously measured lifetimes and theoretical values persist, the ratio of these values is in good agreement with scaling for the different excitation energies. The results serve as a benchmark for current molecular structure calculations. The investigated molecular states are of relevance for an experimental search for a permanent electric dipole moment of the electron in BaF.

AB - Time-resolved detection of laser-induced fluorescence from pulsed excitation of electronic states in barium monofluoride (BaF) molecules has been performed in order to determine the lifetimes of the A2Π1/2 and A2Π3/2 states. The method permits control over experimental parameters such that systematic biases in the interpretation of the data can be controlled to below 10-3 relative accuracy. The statistically limited values for the lifetimes of the A2Π1/2(ν=0) and A2Π3/2(ν=0) states are 57.1(3) and 47.9(7) ns, respectively. Although discrepancies between presently and previously measured lifetimes and theoretical values persist, the ratio of these values is in good agreement with scaling for the different excitation energies. The results serve as a benchmark for current molecular structure calculations. The investigated molecular states are of relevance for an experimental search for a permanent electric dipole moment of the electron in BaF.

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Lifetime measurements of the A 2Π1/2 and A 2Π3/2 states in BaF

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