Details
| Original language | English |
|---|---|
| Article number | 182501 |
| Journal | Physical review letters |
| Volume | 132 |
| Issue number | 18 |
| Publication status | Published - 29 Apr 2024 |
| Externally published | Yes |
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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 132, No. 18, 182501, 29.04.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Laser Excitation of the Th-229 Nucleus
AU - Tiedau, J.
AU - Okhapkin, M. V.
AU - Zhang, K.
AU - Thielking, J.
AU - Zitzer, G.
AU - Peik, E.
AU - Schaden, F.
AU - Pronebner, T.
AU - Morawetz, I.
AU - De Col, L. Toscani
AU - Schneider, F.
AU - Leitner, A.
AU - Pressler, M.
AU - Kazakov, G. A.
AU - Beeks, K.
AU - Sikorsky, T.
AU - Schumm, T.
N1 - Publisher Copyright: © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2024/4/29
Y1 - 2024/4/29
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85191900001&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.132.182501
DO - 10.1103/PhysRevLett.132.182501
M3 - Article
C2 - 38759160
AN - SCOPUS:85191900001
VL - 132
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 18
M1 - 182501
ER -