[ad_1]
Peik, E. & Tamm, C. Nuclear laser spectroscopy of the 3.5 eV transition in Th-229. Europhys. Lett. 61, 181–186 (2003).
Peik, E. & Okhapkin, M. Nuclear clocks based on resonant excitation of γ-transitions. C. R. Phys. 16, 516–523 (2015).
Beeks, K. et al. The thorium-229 low-energy isomer and the nuclear clock. Nat. Rev. Phys. 3, 238–248 (2021).
Peik, E. et al. Nuclear clocks for testing fundamental physics. Quantum Sci. Technol. 6, 034002 (2021).
Campbell, C. J. et al. Single-ion nuclear clock for metrology at the 19th decimal place. Phys. Rev. Lett. 108, 120802 (2012).
Klinkenberg, P. F. A. Spectral structure of trebly ionized thorium, Th IV. Physica B+C 151, 552–567 (1988).
Campbell, C. J. et al. Multiply charged thorium crystals for nuclear laser spectroscopy. Phys. Rev. Lett. 102, 233004 (2009).
Campbell, C. J., Radnaev, A. G. & Kuzmich, A. Wigner crystals of 229Th for optical excitation of the nuclear isomer. Phys. Rev. Lett. 106, 223001 (2011).
Seiferle, B. et al. Energy of the 229Th nuclear clock transition. Nature 573, 243–246 (2019).
Beck, B. R. et al. Energy splitting of the ground-state doublet in the nucleus 229Th. Phys. Rev. Lett. 98, 142501 (2007).
Yamaguchi, A. et al. Energy of the 229Th nuclear clock isomer determined by absolute γ-ray energy difference. Phys. Rev. Lett. 123, 222501 (2019).
Sikorsky, T. et al. Measurement of the 229Th isomer energy with a magnetic microcalorimeter. Phys. Rev. Lett. 125, 142503 (2020).
Kraemer, S. et al. Observation of the radiative decay of the 229Th nuclear clock isomer. Nature 617, 706–710 (2023).
Arvanitaki, A., Huang, J. & Van Tilburg, K. Searching for dilaton dark matter with atomic clocks. Phys. Rev. D 91, 015015 (2015).
Tsai, Y.-D., Eby, J. & Safronova, M. S. Direct detection of ultralight dark matter bound to the Sun with space quantum sensors. Nat. Astron. 7, 113–121 (2023).
Brzeminski, D., Chacko, Z., Dev, A., Flood, I. & Hook, A. Searching for a fifth force with atomic and nuclear clocks. Phys. Rev. D 106, 095031 (2022).
Flambaum, V. V. Enhanced effect of temporal variation of the fine structure constant and the strong interaction in 229Th. Phys. Rev. Lett. 97, 092502 (2006).
Safronova, M. S. et al. Search for new physics with atoms and molecules. Rev. Mod. Phys. 90, 025008 (2018).
Fadeev, P., Berengut, J. C. & Flambaum, V. V. Sensitivity of 229Th nuclear clock transition to variation of the fine-structure constant. Phys. Rev. A 102, 052833 (2020).
von der Wense, L. & Seiferle, B. The 229Th isomer: prospects for a nuclear optical clock. Eur. Phys. J. A 56, 277 (2020).
von der Wense, L., Seiferle, B., Laatiaoui, M. & Thirolf, P. G. Determination of the extraction efficiency for 233U source α-recoil ions from the MLL buffer-gas stopping cell. Eur. Phys. J. A 51, 29 (2015).
von der Wense, L. et al. Direct detection of the 229Th nuclear clock transition. Nature 533, 47–51 (2016).
von der Wense, L., Seiferle, B., Laatiaoui, M. & Thirolf, P. G. The extraction of 229Th3+ from a buffer-gas stopping cell. Nucl. Instrum. Methods Phys. Res. B 376, 260–264 (2016).
Barci, V. et al. Nuclear structure of 229Th from γ-ray spectroscopy study of 233U α-particle decay. Phys. Rev. C 68, 034329 (2003).
Thielking, J. et al. Laser spectroscopic characterization of the nuclear-clock isomer 229mTh. Nature 556, 321–325 (2018).
Wada, M. et al. Slow RI-beams from projectile fragment separators. Nucl. Instrum. Methods Phys. Res. B 204, 570–581 (2003).
Churchill, L. R., DePalatis, M. V. & Chapman, M. S. Charge exchange and chemical reactions with trapped Th3+. Phys. Rev. A 83, 012710 (2011).
Porsev, S. G., Safronova, M. S. & Kozlov, M. G. Precision calculation of hyperfine constants for extracting nuclear moments of 229Th. Phys. Rev. Lett. 127, 253001 (2021).
Berengut, J. C., Dzuba, V. A., Flambaum, V. V. & Porsev, S. G. Proposed experimental method to determine α sensitivity of splitting between ground and 7.6 eV isomeric states in 229Th. Phys. Rev. Lett. 102, 210801 (2009).
Zhang, W. et al. Ultrastable silicon cavity in a continuously operating closed-cycle cryostat at 4 K. Phys. Rev. Lett. 119, 243601 (2017).
Dykhne, A. M., Eremin, N. V. & Tkalya, E. V. Alpha decay of the first excited state of the Th-229 nucleus. J. Exp. Theor. Phys. Lett. 64, 345–349 (1996).
Porsev, S. G. & Flambaum, V. V. Effect of atomic electrons on the 7.6-eV nuclear transition in 229Th3+. Phys. Rev. A 81, 032504 (2010).
Müller, R. A., Volotka, A. V., Fritzsche, S. & Surzhykov, A. Theoretical analysis of the electron bridge process in 229Th3+. Nucl. Instrum. Methods Phys. Res. B 408, 84–88 (2017).
Dykhne, A. M. & Tkalya, E. V. Matrix element of the anomalously low-energy (3.5±0.5 eV) transition in 229Th and the isomer lifetime. J. Exp. Theor. Phys. Lett. 67, 251–256 (1998).
Ruchowska, E. et al. Nuclear structure of 229Th. Phys. Rev. C 73, 044326 (2006).
Tkalya, E. V., Schneider, C., Jeet, J. & Hudson, E. R. Radiative lifetime and energy of the low-energy isomeric level in 229Th. Phys. Rev. C 92, 054324 (2015).
Minkov, N. & Pálffy, A. Reduced transition probabilities for the gamma decay of the 7.8 eV isomer in 229Th. Phys. Rev. Lett. 118, 212501 (2017).
Minkov, N. & Pálffy, A. Theoretical predictions for the magnetic dipole moment of 229mTh. Phys. Rev. Lett. 122, 162502 (2019).
Minkov, N. & Pálffy, A. 229mTh isomer from a nuclear model perspective. Phys. Rev. C 103, 014313 (2021).
Shigekawa, Y. et al. Estimation of radiative half-life of 229mTh by half-life measurement of other nuclear excited states in 229Th. Phys. Rev. C 104, 024306 (2021).
Tkalya, E. V. Spontaneous emission probability for M1 transition in a dielectric medium: 229mTh(3/2+, 3.5±1.0 eV) decay. J. Exp. Theor. Phys. Lett. 71, 311–313 (2000).
Seiferle, B., von der Wense, L. & Thirolf, P. G. Lifetime measurement of the 229Th nuclear isomer. Phys. Rev. Lett. 118, 042501 (2017).
Hayes, A. C., Friar, J. L. & Möller, P. Splitting sensitivity of the ground and 7.6 eV isomeric states of 229Th. Phys. Rev. C 78, 024311 (2008).
Litvinova, E., Feldmeier, H., Dobaczewski, J. & Flambaum, V. Nuclear structure of lowest 229Th states and time-dependent fundamental constants. Phys. Rev. C 79, 064303 (2009).
Safronova, U. I., Johnson, W. R. & Safronova, M. S. Excitation energies, polarizabilities, multipole transition rates, and lifetimes in Th IV. Phys. Rev. A 74, 042511 (2006).
Bollen, G. “Ion surfing” with radiofrequency carpets. Int. J. Mass Spectrom. 299, 131–138 (2011).
Kopfermann, H. Nuclear moments. Nucl. Phys. 16, 188 (1960).
Safronova, M. S. et al. Nuclear charge radii of 229Th from isotope and isomer shifts. Phys. Rev. Lett. 121, 213001 (2018).
Angeli, I. & Marinova, K. P. Table of experimental nuclear ground state charge radii: an update. At. Data Nucl. Data Tables 99, 69–95 (2013).
Kälber, W. et al. Nuclear radii of thorium isotopes from laser spectroscopy of stored ions. Z. Phys. A 334, 103–108 (1989).
[ad_2]
Source link
Leave a Reply