Laser Excitation of the Th-229 Nucleus
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.
Details
- Externe Organisation(en)
-
Physikalisch-Technische Bundesanstalt (PTB)
Vienna Center for Quantum Science and Technology (VCQ)
- Typ
- Artikel
- Journal
- Physical review letters
- Band
- 132
- ISSN
- 0031-9007
- Publikationsdatum
- 29.04.2024
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Allgemeine Physik und Astronomie
- Elektronische Version(en)
-
https://doi.org/10.1103/PhysRevLett.132.182501 (Zugang:
Offen
)
Zitieren
Laden...
