First Observation of the 1S-2S Transition of He+ in an Atomic Beam

Vincent Barbé; Elmer L. Gründeman; Andrés Martinez de Velasco; Charlaine Roth; Mathieu Collombon; Kjeld S.E. Eikema

doi:10.1109/CLEO/EUROPE-EQEC57999.2023.10231884

First Observation of the 1S-2S Transition of He⁺ in an Atomic Beam

Vincent Barbé, Elmer L. Gründeman, Andrés Martinez de Velasco, Charlaine Roth, Mathieu Collombon, Kjeld S.E. Eikema

Research output: Chapter in Book / Report / Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

High-precision spectroscopy of simple, calculable atomic and molecular systems allows for stringent tests of bound-state quantum electrodynamics (QED), determinations of fundamental constants, and searches for physics beyond the standard model. Measurements in different systems enable to separate theory from the fundamental constants, and detect inconsistencies [1,2,3]. An alternative system compared to hydrogen or muonic hydrogen is singly-ionized helium, which enables new fundamental physics tests. Our goal is to measure the 1S-2S transition in He⁺ with an accuracy of 1 kHz or better. It would allow improved QED tests and, combined with muonic He⁺ [4] measurements, permit a more accurate alpha particle charge determination.

Original language	English
Title of host publication	2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference (CLEO/Europe-EQEC)
Subtitle of host publication	[Proceedings]
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798350345995
DOIs	https://doi.org/10.1109/CLEO/EUROPE-EQEC57999.2023.10231884
Publication status	Published - 2023
Event	2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023 - Munich, Germany Duration: 26 Jun 2023 → 30 Jun 2023

Conference

Conference	2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023
Country/Territory	Germany
City	Munich
Period	26/06/23 → 30/06/23

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Publisher Copyright:
© 2023 IEEE.

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10.1109/CLEO/EUROPE-EQEC57999.2023.10231884

First_Observation_of_the_1S-2S_Transition_of_He_in_an_Atomic_BeamFinal published version, 340 KBLicence: Article 25fa Dutch Copyright Act

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Barbé, V., Gründeman, E. L., de Velasco, A. M., Roth, C., Collombon, M., & Eikema, K. S. E. (2023). First Observation of the 1S-2S Transition of He⁺ in an Atomic Beam. In 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference (CLEO/Europe-EQEC): [Proceedings] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CLEO/EUROPE-EQEC57999.2023.10231884

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Barbé, V, Gründeman, EL, de Velasco, AM, Roth, C, Collombon, M & Eikema, KSE 2023, First Observation of the 1S-2S Transition of He⁺ in an Atomic Beam. in 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference (CLEO/Europe-EQEC): [Proceedings]. Institute of Electrical and Electronics Engineers Inc., 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023, Munich, Germany, 26/06/23. https://doi.org/10.1109/CLEO/EUROPE-EQEC57999.2023.10231884

First Observation of the 1S-2S Transition of He⁺ in an Atomic Beam. / Barbé, Vincent; Gründeman, Elmer L.; de Velasco, Andrés Martinez et al.
2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference (CLEO/Europe-EQEC): [Proceedings]. Institute of Electrical and Electronics Engineers Inc., 2023.

Research output: Chapter in Book / Report / Conference proceeding › Conference contribution › Academic › peer-review

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Barbé V, Gründeman EL, de Velasco AM, Roth C, Collombon M, Eikema KSE. First Observation of the 1S-2S Transition of He⁺ in an Atomic Beam. In 2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference (CLEO/Europe-EQEC): [Proceedings]. Institute of Electrical and Electronics Engineers Inc. 2023 Epub 2023 Sept 4. doi: 10.1109/CLEO/EUROPE-EQEC57999.2023.10231884