Matrix isolated barium monofluoride: Assembling a sample of BaF molecules for a measurement of the electron electric dipole moment
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| Auteurs principaux: | , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| author | Corriveau, Z. Lambo, R. L. Heinrich, D. Garcia, J. Perez McCall, N. T. Yau, H. -M. Chauhan, T. Koyanagi, G. K. Marsman, A. George, M. C. Storry, C. H. Horbatsch, M. Hessels, E. A. |
| author_facet | Corriveau, Z. Lambo, R. L. Heinrich, D. Garcia, J. Perez McCall, N. T. Yau, H. -M. Chauhan, T. Koyanagi, G. K. Marsman, A. George, M. C. Storry, C. H. Horbatsch, M. Hessels, E. A. |
| contents | A cryogenic neon solid doped with barium monofluoride (BaF) is created on a cryogenic substrate using a stream of Ne gas and a high-intensity beam of BaF molecules produced in a cryogenic helium-buffer-gas laser-ablation source. The apparatus is designed for eventual use in a measurement of the electron electric dipole moment (eEDM). Laser-induced fluorescence is observed from transitions up to the $B\,^2Σ_{1/2}$ state. The number of BaF molecules found to be present in the solid and addressable with this laser transition is approximately 10$^{10}$ per mm$^3$, which is of the same order as the total number of BaF molecules that impact the substrate during the hour of growth time for the solid. As a result, an eventual eEDM measurement could have continual access to an accumulation of an hour's worth of molecules (all of which are contained within a 1-mm$^3$ volume and are thermalized into the ground state), compared to beam experiments which study the molecules from a single ablation during the millisecond-timescale of their passage through a much larger-scale measurement apparatus. The number of BaF molecules observed in the doped solid matches the target value for our planned eEDM measurement. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_04591 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Matrix isolated barium monofluoride: Assembling a sample of BaF molecules for a measurement of the electron electric dipole moment Corriveau, Z. Lambo, R. L. Heinrich, D. Garcia, J. Perez McCall, N. T. Yau, H. -M. Chauhan, T. Koyanagi, G. K. Marsman, A. George, M. C. Storry, C. H. Horbatsch, M. Hessels, E. A. Atomic Physics A cryogenic neon solid doped with barium monofluoride (BaF) is created on a cryogenic substrate using a stream of Ne gas and a high-intensity beam of BaF molecules produced in a cryogenic helium-buffer-gas laser-ablation source. The apparatus is designed for eventual use in a measurement of the electron electric dipole moment (eEDM). Laser-induced fluorescence is observed from transitions up to the $B\,^2Σ_{1/2}$ state. The number of BaF molecules found to be present in the solid and addressable with this laser transition is approximately 10$^{10}$ per mm$^3$, which is of the same order as the total number of BaF molecules that impact the substrate during the hour of growth time for the solid. As a result, an eventual eEDM measurement could have continual access to an accumulation of an hour's worth of molecules (all of which are contained within a 1-mm$^3$ volume and are thermalized into the ground state), compared to beam experiments which study the molecules from a single ablation during the millisecond-timescale of their passage through a much larger-scale measurement apparatus. The number of BaF molecules observed in the doped solid matches the target value for our planned eEDM measurement. |
| title | Matrix isolated barium monofluoride: Assembling a sample of BaF molecules for a measurement of the electron electric dipole moment |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2410.04591 |