Erlangen 2026 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 5: Structure and Dynamics of Nuclei II

HK 5.6: Vortrag

Montag, 16. März 2026, 18:00–18:15, AM 00.021

Nuclear resonance fluorescence study of ⁷⁰Zn as a probe for nuclear structure at N=40 — •J. Hauf¹, V. Werner¹, N. Pietralla¹, R. V. F. Janssens^2,3, A. D. Ayangeakaa^2,3, D. Balabanski⁴, M. Beuschlein¹, R. Beyer⁵, S. W. Finch^2,6, A. Gupta¹, D. Gribble^2,3, T. Hensel⁵, M. Heumüller¹, F. E. Idoku^2,3, J. Isaak¹, X. James^2,3, S. R. Johnson^2,3, A. Junghans⁵, J. Kleemann¹, P. Koseoglou¹, T. Kowalewski^2,3, A. Kusoglu⁴, E. Masha⁵, C. M. Nickel¹, O. Papst¹, M. Pichotta⁵, K. Prifti¹, K. Römer⁵, A. Saracino^2,3, L. Shaeding^2,3, P.-A. Söderström⁴, K. Schmidt⁵, R. Schwengner⁵, A. Thees⁵, N. Tsoneva⁴, S. Turkat⁵, A. Wagner⁵, and A. Yadav⁵ — ¹TU Darmstadt, IKP — ²TUNL — ³University of North Carolina — ⁴ELI-NP — ⁵Helmholtz-Zentrum Dresden-Rossendorf — ⁶Duke University

Properties of nuclei at the N=40 subshell closure are strongly influenced by several nuclear-structure effects, such as shape coexistence originating in Type-II shell evolution. This study aims to achieve a better understanding of these effects by investigating the N=40 nucleus ⁷⁰Zn using the nuclear resonance fluorescence method with bremsstrahlung and quasi-monoenergetic photon beams at γELBE and HIγS, respectively. Preliminary results for the average E1- and M1-strength distributions and decay branches of ⁷⁰Zn are shown and discussed. This work is supported by DFG under Project-IDs 499256822 GRK 2891, 279384907 SFB 1245, ELI-RO under ELI-RO/RDI/2024 002, ELI-RO/RDI/2024 007 and US DOE by No. DE-FG02-97ER41041 (UNC), No. DE-FG02-97ER41033 (TUNL).

Keywords: Nuclear resonance fluorescence; Shape coexistence; Pygmy dipole resonance; Nuclear structure