Cesium atoms in a cryogenic argon matrix

Battard, T.; Lahs, S.; Crépin, C.; Comparat, D.

doi:10.1103/physreva.108.042820

Phys. Rev. A

2023

DOI: 10.1103/physreva.108.042820

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Cesium atoms in a cryogenic argon matrix

T. Battard,

S. Lahs,

C. Crépin

et al.

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Cited by 2 publications

References 148 publications

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Experimental perspectives on the matter–antimatter asymmetry puzzle: developments in electron EDM and H¯ experiments

Comparat,

Malbrunot,

Malbrunot-Ettenauer

et al. 2023

Phil. Trans. R. Soc. A.

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In the search for clues to the matter–antimatter puzzle, experiments with atoms or molecules play a particular role. These systems allow measurements with very high precision, as demonstrated by the unprecedented limits down to 10 − 30 e cm on electron EDM using molecular ions, and relative measurements at the level of 10 − 12 in spectroscopy of antihydrogen atoms. Building on these impressive measurements, new experimental directions offer potential for drastic improvements. We review here some of the new perspectives in those fields and their associated prospects for new physics searches. This article is part of the theme issue ‘The particle-gravity frontier’.

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Experimental perspectives on the matter–antimatter asymmetry puzzle: developments in electron EDM and H¯ experiments

Comparat,

Malbrunot,

Malbrunot-Ettenauer

et al. 2023

Phil. Trans. R. Soc. A.

Self Cite

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Overcoming photobleaching in imaging of single barium atoms in a solid xenon matrix

Yvaine,

Fairbank,

Soderstrom

et al. 2024

Phys. Rev. Research

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Neutrinoless double beta decay is one of the most sensitive probes for new physics beyond the Standard Model of particle physics. One of the isotopes under investigation is Xe136, which would double beta decay into Ba136. Detecting the single Ba136 daughter provides a sort of ultimate tool in the discrimination against backgrounds. Previous work demonstrated the ability to perform single atom imaging of Ba atoms in a single-vacancy site of a solid xenon matrix. In this paper, the effort to identify signal from individual barium atoms is extended to Ba atoms in a hexa-vacancy site in the matrix and is achieved despite increased photobleaching in this site. Abrupt fluorescence turn-off of a single Ba atom is also observed. Significant recovery of fluorescence signal lost through photobleaching is demonstrated upon annealing of Ba deposits in the Xe ice. Following annealing, it is observed that Ba atoms in the hexa-vacancy site exhibit antibleaching while Ba atoms in the tetra-vacancy site exhibit bleaching. This may be evidence for a matrix site transfer upon laser excitation. Our findings offer a path of continued research toward tagging of Ba daughters in all significant sites in solid xenon. Published by the American Physical Society 2024

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Cesium atoms in a cryogenic argon matrix

Cited by 2 publications

References 148 publications

Experimental perspectives on the matter–antimatter asymmetry puzzle: developments in electron EDM and H¯ experiments

Experimental perspectives on the matter–antimatter asymmetry puzzle: developments in electron EDM and H¯ experiments

Overcoming photobleaching in imaging of single barium atoms in a solid xenon matrix

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