Details
| Original language | English |
|---|---|
| Article number | 023134 |
| Journal | Physical Review Research |
| Volume | 5 |
| Issue number | 2 |
| Publication status | Published - 30 May 2023 |
| Externally published | Yes |
Abstract
Th229 with a low-lying nuclear isomeric state is an essential candidate for a nuclear clock as well as many other applications. Laser excitation of the isomeric state has been a long-standing goal. With relativistic Th229 ions in storage rings, high-power lasers with wavelengths in the visible range or longer can be used to achieve high excitation rates of Th229 isomers. This can be realized through direct resonant excitation or excitation via an intermediate nuclear or electronic state, facilitated by the tunability of both the laser-beam and ion-bunch parameters. Unique opportunities are offered by highly charged Th229 ions due to the nuclear-state mixing. The significantly reduced isomeric-state lifetime corresponds to a much higher excitation rate for direct resonant excitation. Importantly, we propose electric dipole transitions changing both the electronic and nuclear states that are opened by the nuclear hyperfine mixing. We suggest using them for efficient isomer excitation in Li-like Th229 ions, via stimulated Raman adiabatic passage or single-laser excitation. We also propose schemes for probing the isomers, utilizing nuclear radiative decay or laser spectroscopy on electronic transitions, through which the isomeric-state energy can be determined with an orders-of-magnitude higher precision than the current value. The schemes proposed here for Th229 could also be adapted to low-energy nuclear states in other nuclei, such as Pa229.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical Review Research, Vol. 5, No. 2, 023134, 30.05.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Excitation and probing of low-energy nuclear states at high-energy storage rings
AU - Jin, Junlan
AU - Bekker, Hendrik
AU - Kirschbaum, Tobias
AU - Litvinov, Yuri A.
AU - Pálffy, Adriana
AU - Sommerfeldt, Jonas
AU - Surzhykov, Andrey
AU - Thirolf, Peter G.
AU - Budker, Dmitry
N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the 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 - 2023/5/30
Y1 - 2023/5/30
N2 - Th229 with a low-lying nuclear isomeric state is an essential candidate for a nuclear clock as well as many other applications. Laser excitation of the isomeric state has been a long-standing goal. With relativistic Th229 ions in storage rings, high-power lasers with wavelengths in the visible range or longer can be used to achieve high excitation rates of Th229 isomers. This can be realized through direct resonant excitation or excitation via an intermediate nuclear or electronic state, facilitated by the tunability of both the laser-beam and ion-bunch parameters. Unique opportunities are offered by highly charged Th229 ions due to the nuclear-state mixing. The significantly reduced isomeric-state lifetime corresponds to a much higher excitation rate for direct resonant excitation. Importantly, we propose electric dipole transitions changing both the electronic and nuclear states that are opened by the nuclear hyperfine mixing. We suggest using them for efficient isomer excitation in Li-like Th229 ions, via stimulated Raman adiabatic passage or single-laser excitation. We also propose schemes for probing the isomers, utilizing nuclear radiative decay or laser spectroscopy on electronic transitions, through which the isomeric-state energy can be determined with an orders-of-magnitude higher precision than the current value. The schemes proposed here for Th229 could also be adapted to low-energy nuclear states in other nuclei, such as Pa229.
AB - Th229 with a low-lying nuclear isomeric state is an essential candidate for a nuclear clock as well as many other applications. Laser excitation of the isomeric state has been a long-standing goal. With relativistic Th229 ions in storage rings, high-power lasers with wavelengths in the visible range or longer can be used to achieve high excitation rates of Th229 isomers. This can be realized through direct resonant excitation or excitation via an intermediate nuclear or electronic state, facilitated by the tunability of both the laser-beam and ion-bunch parameters. Unique opportunities are offered by highly charged Th229 ions due to the nuclear-state mixing. The significantly reduced isomeric-state lifetime corresponds to a much higher excitation rate for direct resonant excitation. Importantly, we propose electric dipole transitions changing both the electronic and nuclear states that are opened by the nuclear hyperfine mixing. We suggest using them for efficient isomer excitation in Li-like Th229 ions, via stimulated Raman adiabatic passage or single-laser excitation. We also propose schemes for probing the isomers, utilizing nuclear radiative decay or laser spectroscopy on electronic transitions, through which the isomeric-state energy can be determined with an orders-of-magnitude higher precision than the current value. The schemes proposed here for Th229 could also be adapted to low-energy nuclear states in other nuclei, such as Pa229.
UR - http://www.scopus.com/inward/record.url?scp=85159076792&partnerID=8YFLogxK
U2 - 10.1103/PhysRevResearch.5.023134
DO - 10.1103/PhysRevResearch.5.023134
M3 - Article
VL - 5
JO - Physical Review Research
JF - Physical Review Research
SN - 2643-1564
IS - 2
M1 - 023134
ER -