Record link: 
http://hdl.handle.net/20.500.12708/205156
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Title: 
Laser Excitation of the Th-229 Nucleus
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Citation: 
Tiedau, J., Okhapkin, M. V., Zhang, K., Thielking, J., Zitzer, G., Peik, E., Schaden, F., Pronebner, T. T., Morawetz, I., Toscani De Col, L., Schneider, F., Leitner, A., Pressler, M., Kazakov, G., Beeks, K. A. A. G., Sikorsky, T., & Schumm, T. (2024). Laser Excitation of the Th-229 Nucleus. Physical Review Letters, 132(18), Article 182501. https://doi.org/10.1103/PhysRevLett.132.182501
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Publisher DOI: 
10.1103/PhysRevLett.132.182501
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Publication Type: 
Article - Original Research Article
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Language: 
English
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Authors: 
Tiedau, J 
Okhapkin, M V 
Zhang, K 
Thielking, J 
Zitzer, G 
Peik, E 
Schaden, Fabian 
Pronebner, Thomas Tobias 
Morawetz, Ira 
Toscani De Col, Luca 
Schneider, Fabian 
Leitner, Adrian 
Pressler, Martin 
Kazakov, Georgy 
Beeks, Kjeld Adrianus Antonius Gerardus 
Sikorsky, Tomas 
Schumm, Thorsten 
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Organisational Unit: 
E141-07 - Forschungsbereich Quantum Metrology 
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Journal: 
Physical Review Letters 
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ISSN: 
0031-9007
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Date (published): 
3-May-2024
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Number of Pages: 
6
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Publisher: 
AMER PHYSICAL SOC
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Peer reviewed: 
Yes
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Keywords: 
Th-229
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Abstract: 
The 8.4 eV nuclear isomer state in Th-229 is resonantly excited in Th-doped CaF₂ crystals using a tabletop tunable laser system. A resonance fluorescence signal is observed in two crystals with different Th-229 dopant concentrations, while it is absent in a control experiment using Th-232. The nuclear resonance for the Th⁴⁺ ions in Th:CaF₂ is measured at the wavelength 148.3821(5) nm, frequency 2020.409(7) THz, and the fluorescence lifetime in the crystal is 630(15) s, corresponding to an isomer half-life of 1740(50) s for a nucleus isolated in vacuum. These results pave the way toward Th-229 nuclear laser spectroscopy and realizing optical nuclear clocks.
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Research Areas: 
Materials Characterization: 100%
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Science Branch: 
1030 - Physik, Astronomie: 100%
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