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HK: Fachverband Physik der Hadronen und Kerne

HK 41: Structure and Dynamics of Nuclei VII

HK 41.2: Talk

Wednesday, March 22, 2023, 16:15–16:30, SCH/A118

Nuclear Structure Studies from Mass Spectrometry of Isomeric States — •Lukas Nies — CERN, Switzerland — University of Greifswald, Germany

The nuclear binding energy arises from various effects that govern a nuclei’s properties. Different nucleon configurations within nuclear isomers lead to modified binding energies, often resulting in mass differences of tens to hundreds of kilo-electronvolts. These isomeric excitation energies can be directly accessed by measuring the difference in atomic masses of ground and isomeric states. Here, we present such measurements performed with the ISOLTRAP mass spectrometer located at ISOLDE/CERN. By evaluating the excitation energies of neutron-deficient indium isotopes down to the shell closure at N=50 against state-of-the-art shell model, DFT, and ab initio calculations, we contrast the performance of these theories applied to several nuclear properties. We further present evidence for shape-coexistences close to N=50 through the precise excitation energy measurement of the (1/2)⁺ state in zinc-79, supported by accurate large-scale shell model calculations.