Sympathetic cooling of trapped Th3+ alpha-recoil ions for laser spectroscopy
| Autor: | Zitzer, G., Tiedau, J., Okhapkin, M. V., Zhang, K., Mokry, C., Runke, J., Düllmann, Ch. E., Peik, E. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 109, 033116 (2024) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.109.033116 |
| Popis: | 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$^{3+}$. Comment: 8 pages, 8 figures |
| Databáze: | arXiv |
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