It is proposed to use the photoelectric effect on inner s shells of the 229Th atom to more accurately determine the energy of its 8.3-eV isomer. The calculation has been performed using the Feinberg–Migdal shaking theory, which gives the probability of the formation of the isomer up to \(0.5 \times {{10}^{{ - 3}}}\) on the K shell. As a result, two lines separated by the energy of the isomer has been predicted in the spectrum of photoelectrons. Other applications of the method to study the properties of the isomer, including that through shaking at the formation of radioactive beams at storage rings, have also been discussed. Furthermore, the experimental detection of the effect will make it possible to determine more accurately its partial lifetime.
REFERENCES
M. Filzinger, S. Dörscher, R. Lange, J. Klose, M. Steinel, E. Benkler, E. Peik, C. Lisdat, and N. Huntemann, Phys. Rev. Lett. 130, 253001 (2023).
S. Kraemer, J. Moens, M. Athanasakis-Kaklamanakis, et al., Nature (London, U.K.) 617, 706 (2023). https://doi.org/10.1038/s41586-023-05894-z
L. F. Vitushkin, F. F. Karpeshin, and M. B. Trzhaskovskaya, Phys. At. Nucl. 83, 775 (2020).
F. F. Karpeshin and L. F. Vitushkin, arXiv: 2307.08711. https://doi.org/10.48550/arXiv.2307.08711
L. von der Wense and Z. Chuankun, Eur. Phys. J. Ser. D 74, 146 (2020).
F. F. Karpeshin, S. Wycech, I. M. Band, M. B. Trzhaskovskaya, M. Pfützner, and J. Zylicz, Phys. Rev. C 57, 3085 (1998).
V. M. Shabaev, D. A. Glazov, A. M. Ryzhkov, C. Brandau, G. Plunien, W. Quint, A. M. Volchkova, and D. V. Zinenko, Phys. Rev. Lett. 128, 043001 (2022).
E. L. Feinberg, J. Phys. (USSR) 4, 423 (1941).
A. Migdal, Zh. Eksp. Teor. Fiz. 11, 207 (1941).
D. S. Akerib, S. Alsum, H. M. Araújo, et al. (LUX Collab.), Phys. Rev. Lett. 122, 131301 (2019).
E. Aprile, J. Aalbers, F. Agostini, et al. (XENON Collab.), Phys. Rev. Lett. 123, 241803 (2019).
P. Agnes, I. F. M. Albuquerque, T. Alexander, et al. (DarkSide Collab.), Phys. Rev. Lett. 130, 101001 (2023).
F. F. Karpeshin and M. B. Trzhaskovskaya, Phys. Rev. C 107, 045502 (2023).
M. I. Krivoruchenko, K. S. Tyrin, and F. F. Karpeshin, JETP Lett. 117, 884 (2023).
F. F. Karpeshin, I. M. Band, and M. B. Trzhaskovskaya, Nucl. Phys. A 654, 579 (1999).
B. A. Zon and F. F. Karpeshin, Sov. Phys. JETP 70, 224 (1990).
F. F. Karpeshin, Instantaneous Fission in Muonic Atoms and Resonance Conversion (Nauka, St. Peteresburg, 2006) [in Russian].
J. L. Campbell and T. Papp, At. Data Nucl. Data Tables 77, 1 (2001).
L. von der Wense and B. Seiferle, Eur. Phys. J. A 56, 277 (2020).
Scientific Program and Abstracts of International Workshop on 100 Years of Nuclear Isomers, May 2–4, 2022, Berlin, Germany.
Scientific Program and Abstracts of 766-th WE-Heraeus-Seminar on High-Precision Measurements and Searches for New Physics, May 9–13, 2022, Physikzentrum Bad Honnef, Germany. https://www.we-heraeus-stiftung.de/veranstaltungen/ high-precision-measurements-and-searches-for-new-physics/.
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I am grateful to J. Zylicz and M. Pfützner for stimulating discussions.
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Karpeshin, F.F. Measurement of the Energy of the 8.3-eV 229Th Isomer Using the Photoelectric Effect. Jetp Lett. 118, 548–552 (2023). https://doi.org/10.1134/S0021364023602890
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DOI: https://doi.org/10.1134/S0021364023602890