Erlangen 2026 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 14: Structure and Dynamics of Nuclei IV
HK 14.3: Talk
Tuesday, March 17, 2026, 17:00–17:15, AM 00.021
Vibrations, rotations and single-particle excitations in 168Dy — •Johan Emil Linnestad Larsson1,2,3, Helena Albers3, Jeroen Bormans1,2,3, Magdalena Górska3, Tuomas Grahn4, Costel M. Petrache5, Norbert Pietralla1, and Volker Werner1,2 — 1Technische Universität Darmstadt, 64289 Darmstadt, Germany — 2Helmholtz Forschungsakademie Hessen für FAIR (HFHF), GSI, 64289 Darmstadt, Germany — 3GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany — 4University of Jyväskylä and Helsinki Institute of Physics, P.O. Box 35, FI-40014 Jyväskylä, Finland — 5Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
The low excitation energies of first excited 2+ states in the rare-earth nuclei close to the mid-shell are an indicator of their degree of deformation, and it reveals more complicated dependencies on neutron number [1].
In order to further study these isotopes, we performed the first ever projectile-fragmentation of 170Er with an energy of 1 GeV/u at the GSI Helmholtzzentrum für Schwerionenforschung GmbH. The key isotope of 168Dy was cleanly separated, identified and implanted in the DESPEC setup [2]. The newly observed transitions and transition probabilities reveal novel structures in 168Dy, as well as providing a new interpretation of the isotope.
References: [1] Z. Patel et al., PRL 113, 262502 (2014). [2] A. Mistry et al., NIM A 1033, 166662 (2022).
Keywords: structure; gamma ray spectroscopy; rare-earth; deformed; radioactive ion beams