Erlangen 2026 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
HK: Fachverband Physik der Hadronen und Kerne
HK 10: Invited Talks
HK 10.2: Invited Talk
Tuesday, March 17, 2026, 11:30–12:00, MED 00.915
Exploring Triaxial Deformation in Neutron-rich Nuclei — •Kathrin Wimmer1, Byul Moon2, and Wolfram Korten3 — 1University of Cologne, Institute for Nuclear Physics, Germany — 2Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea — 3IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
Understanding nuclear shapes far from stability is key to refining nuclear models. While many deformed nuclei are well described by axial symmetry, some isotopes require a triaxial description, where the nucleus lacks a single axis of symmetry. This triaxiality has long been debated, with contrasting theoretical models offering different interpretations. Neutron-rich Zr and Mo isotopes are ideal candidates to explore this question due to predicted shape coexistence and evolving collective structure.
To probe this, we performed a high-resolution in-beam γ-ray spectroscopy experiment at RIBF using the HiCARI array. Nucleon-removal reactions populated 108,110Zr and 110,112Mo. Excited-state lifetimes were extracted via the line-shape method, and new level schemes were established, revealing characteristic signatures associated with triaxial deformation. The results, interpreted using modern theoretical models, provide new constraints on deformation in this mass region.
In this talk, I will present the experiment, discuss the results in detail, and provide an outlook for further studies of triaxial deformation in neutron-rich nuclei.