Sympathetic cooling of trapped Th3+ alpha-recoil ions for laser spectroscopy
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866913280794034176 |
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| author | Zitzer, G. Tiedau, J. Okhapkin, M. V. Zhang, K. Mokry, C. Runke, J. Düllmann, Ch. E. Peik, E. |
| author_facet | Zitzer, G. Tiedau, J. Okhapkin, M. V. Zhang, K. Mokry, C. Runke, J. Düllmann, Ch. E. Peik, E. |
| contents | Sympathetic cooling of Th$^{3+}$ ions is demonstrated in an experiment where $^{229}$Th and $^{230}$Th are extracted from uranium recoil ion sources and are confined in a linear Paul trap together with laser-cooled $^{88}$Sr$^+$ ions. Because of their similar charge-to-mass ratios the ions are closely coupled and arrange themselves in two-species Coulomb crystals, containing up to a few tens of Th$^{3+}$ ions. To show the suitability of the sympathetically cooled Th$^{3+}$ ions for high-resolution laser spectroscopy, the absolute frequencies and isotope shifts of 5F$_{5/2}$\,$\rightarrow$\,6D$_{5/2}$ and 5F$_{7/2}$\,$\rightarrow$\,6D$_{5/2}$ transitions of $^{230}$Th$^{3+}$ have been measured. The system is developed for hyperfine spectroscopy of electronic transitions of nuclear ground and isomeric states in $^{229}$Th$^{3+}$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2312_05106 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Sympathetic cooling of trapped Th3+ alpha-recoil ions for laser spectroscopy Zitzer, G. Tiedau, J. Okhapkin, M. V. Zhang, K. Mokry, C. Runke, J. Düllmann, Ch. E. Peik, E. Atomic Physics Nuclear Experiment Sympathetic cooling of Th$^{3+}$ ions is demonstrated in an experiment where $^{229}$Th and $^{230}$Th are extracted from uranium recoil ion sources and are confined in a linear Paul trap together with laser-cooled $^{88}$Sr$^+$ ions. Because of their similar charge-to-mass ratios the ions are closely coupled and arrange themselves in two-species Coulomb crystals, containing up to a few tens of Th$^{3+}$ ions. To show the suitability of the sympathetically cooled Th$^{3+}$ ions for high-resolution laser spectroscopy, the absolute frequencies and isotope shifts of 5F$_{5/2}$\,$\rightarrow$\,6D$_{5/2}$ and 5F$_{7/2}$\,$\rightarrow$\,6D$_{5/2}$ transitions of $^{230}$Th$^{3+}$ have been measured. The system is developed for hyperfine spectroscopy of electronic transitions of nuclear ground and isomeric states in $^{229}$Th$^{3+}$. |
| title | Sympathetic cooling of trapped Th3+ alpha-recoil ions for laser spectroscopy |
| topic | Atomic Physics Nuclear Experiment |
| url | https://arxiv.org/abs/2312.05106 |