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NSR database version of April 27, 2024.

Search: Author = S.Kraemer

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2023KR02      Nature(London) 617, 706 (2023)

S.Kraemer, J.Moens, M.Athanasakis-Kaklamanakis, S.Bara, K.Beeks, P.Chhetri, K.Chrysalidis, A.Claessens, T.E.Cocolios, J.G.M.Correia, H.De Witte, R.Ferrer, S.Geldhof, R.Heinke, N.Hosseini, M.Huyse, U.Koster, Y.Kudryavtsev, M.Laatiaoui, R.Lica, G.Magchiels, V.Manea, C.Merckling, L.M.C.Pereira, S.Raeder, T.Schumm, S.Sels, P.G.Thirolf, S.M.Tunhuma, P.Van Den Bergh, P.Van Duppen, A.Vantomme, M.Verlinde, R.Villarreal, U.Wahl

Observation of the radiative decay of the ²²⁹Th nuclear clock isomer

RADIOACTIVITY ²²⁹Ac(β^-), ²²⁹Th(IT) [from U(p, X), E=1.4 GeV]; measured decay products, Eγ, Iγ; deduced isomeric transition energies and T_1/2. Comparison with available data. The ISOLDE facility at CERN.

doi: 10.1038/s41586-023-05894-z
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2023KR05      Nucl.Instrum.Methods Phys.Res. B542, 1 (2023)

S.Kraemer, P.Chhetri, S.Bara, A.Claessens, H.De Witte, Y.Elskens, R.Ferrer, Y.Kudryavtsev, S.Sels, P.Van Den Bergh, P.Van Duppen

A setup for vacuum-ultraviolet spectroscopy of the ²²⁹Th low-energy isomer

RADIOACTIVITY ²²⁹Th(IT), ²²⁹Ac(β^-); measured decay products; deduced photon spectra, the isomeric decay, the uncertainty on the isomer's excitation energy. The ISOLDE facility.

doi: 10.1016/j.nimb.2023.05.029
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2019VE05      Phys.Rev. C 100, 024315 (2019)

M.Verlinde, S.Kraemer, J.Moens, K.Chrysalidis, J.G.Correia, S.Cottenier, H.De Witte, D.V.Fedorov, V.N.Fedosseev, R.Ferrer, L.M.Fraile, S.Geldhof, C.A.Granados, M.Laatiaoui, T.A.L.Lima, P.-C.Lin, V.Manea, B.A.Marsh, I.Moore, L.M.C.Pereira, S.Raeder, P.Van den Bergh, P.Van Duppen, A.Vantomme, E.Verstraelen, U.Wahl, S.G.Wilkins

Alternative approach to populate and study the ²²⁹Th nuclear clock isomer

RADIOACTIVITY ^229mTh(IT)[from β^- decay of ²²⁹Ac produced in U(p, X), E=1.4 GeV reaction, via a laser ion source at ISOLDE-CERN]; proposed an alternative method to produce the low-energy isomer in ²²⁹Th at 7.6 eV after the implantation of ²²⁹Ac ions in a large-band gap CaF₂ host. Discussed benefits of using ²²⁹Ac ion beam in contrast to common use of α decay of ²³³U for the study of half-life and excitation energy of the ²²⁹Th isomer. Preparatory experiments, testing key ingredients of this concept, were conducted at ISOLDE-CERN.

doi: 10.1103/PhysRevC.100.024315
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