Help us make Indico better by taking this survey! Aidez-nous à améliorer Indico en répondant à ce sondage !

November 30, 2022 to December 2, 2022
CERN
Europe/Zurich timezone

Mass Measurements of Isomeric States for Nuclear Structure Studies

Nov 30, 2022, 2:30 PM
12m
503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber

CERN

162
Show room on map
Submitted oral (In person) Atomic Techniques for Nuclear Structure 1

Speaker

Lukas Nies (CERN / University of Greifswald (DE))

Description

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. 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.

Lukas Nies for the ISOLTRAP Collaboration

Primary author

Lukas Nies (CERN / University of Greifswald (DE))

Presentation materials