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Observation of the radiative decay of the 229Th nuclear clock isomer.
Kraemer S, Moens J, Athanasakis-Kaklamanakis M, Bara S, Beeks K, Chhetri P, Chrysalidis K, Claessens A, Cocolios TE, Correia JGM, Witte H, Ferrer R, Geldhof S, Heinke R, Hosseini N, Huyse M, Köster U, Kudryavtsev Y, Laatiaoui M, Lica R, Magchiels G, Manea V, Merckling C, Pereira LMC, Raeder S, Schumm T, Sels S, Thirolf PG, Tunhuma SM, Van Den Bergh P, Van Duppen P, Vantomme A, Verlinde M, Villarreal R, Wahl U. Kraemer S, et al. Among authors: beeks k. Nature. 2023 May;617(7962):706-710. doi: 10.1038/s41586-023-05894-z. Epub 2023 May 24. Nature. 2023. PMID: 37225880
Growth and characterization of thorium-doped calcium fluoride single crystals.
Beeks K, Sikorsky T, Rosecker V, Pressler M, Schaden F, Werban D, Hosseini N, Rudischer L, Schneider F, Berwian P, Friedrich J, Hainz D, Welch J, Sterba JH, Kazakov G, Schumm T. Beeks K, et al. Sci Rep. 2023 Mar 8;13(1):3897. doi: 10.1038/s41598-023-31045-5. Sci Rep. 2023. PMID: 36890210 Free PMC article.
Absolute X-ray energy measurement using a high-accuracy angle encoder.
Masuda T, Watanabe T, Beeks K, Fujimoto H, Hiraki T, Kaino H, Kitao S, Miyamoto Y, Okai K, Sasao N, Seto M, Schumm T, Shigekawa Y, Tamasaku K, Uetake S, Yamaguchi A, Yoda Y, Yoshimi A, Yoshimura K. Masuda T, et al. Among authors: beeks k. J Synchrotron Radiat. 2021 Jan 1;28(Pt 1):111-119. doi: 10.1107/S1600577520014526. Epub 2021 Jan 1. J Synchrotron Radiat. 2021. PMID: 33399559 Free article.
Measurement of the ^{229}Th Isomer Energy with a Magnetic Microcalorimeter.
Sikorsky T, Geist J, Hengstler D, Kempf S, Gastaldo L, Enss C, Mokry C, Runke J, Düllmann CE, Wobrauschek P, Beeks K, Rosecker V, Sterba JH, Kazakov G, Schumm T, Fleischmann A. Sikorsky T, et al. Among authors: beeks k. Phys Rev Lett. 2020 Oct 2;125(14):142503. doi: 10.1103/PhysRevLett.125.142503. Phys Rev Lett. 2020. PMID: 33064540