Gießen 2024 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 38: Structure and Dynamics of Nuclei VIII
HK 38.2: Vortrag
Mittwoch, 13. März 2024, 16:15–16:30, HBR 14: HS 4
PRISMA analysis of heavy Ne isotopes — •Floris Drent for the LNL EXP 015 collaboration — GSI Helmholtzzentrum für Schwerionenforschung
In 1975, mass measurements on sodium isotopes 30, 31,32Na showed a significant difference between the measured mass excess and the calculated mass excess using various nuclei models. This was the first voyage towards discovering a phenomenon in nuclear physics called the Island of Inversion. The Island of Inversion is a group of nuclei at N = 20 shell closure whereby the ground states are characterised by particle-hole configurations with excitations across the shell gap. These configurations are counterintuitive compared to naively filling the shell as expected. Such configurations also give rise to intruder states which are also present in the nuclei surrounding the Island. Investigating these intruder states can give information on the borders of the Island. In april 2023, a 22Ne upon 238U beam experiment was performed to perform spectroscopy and lifetime measurements on 23,24,25He using AGATA+PRISMA. This was also a pilot experiment to get familiar with using PRISMA for light ions and to prepare for future experiments using 28Mg and 30Si beams. In this presentation, I will give an overview of the 22Ne-experiment, discuss the modification we apply to the PRISMA analysis procedure regarding the light ions and give an outlook of the 28Mg-beam experiment.
Keywords: AGATA; PRISMA; Island of Inversion