SAMOP 2023 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MS: Fachverband Massenspektrometrie
MS 4: Heavy and Superheavy Elements
MS 4.2: Hauptvortrag
Donnerstag, 9. März 2023, 11:30–12:00, F128
Mass measurements of heavy and superheavy nuclides and isomers with SHIPTRAP — •Manuel J. Gutiérrez for the SHIPTRAP collaboration — GSI Darmstadt, Germany — HIM Mainz, Germany
The existence of superheavy elements is due to quantum shell effects, which stabilize them against spontaneous fission. Several theoretical models exist to describe these very complex nuclear systems. By providing nuclear binding energies, direct mass measurements can benchmark these models.
The Penning-trap mass spectrometer SHIPTRAP is devoted to performing mass measurements of heavy and superheavy nuclei produced via fusion-evaporation reactions with minute yields. Mass resolving powers in the 107 range, which are achieved with the Phase-Imaging Ion-Cyclotron-Resonance technique, enable the study of low-lying, long-lived isomeric states. Within the FAIR Phase-0 campaign, the latest measurements focused on several nuclides with such isomeric states, ranging from 241Cf to 258Db. Additionally, measurements were carried out on the 206Fr–202At–198Bi chain, aiming to pin down the absolute excitation energies of two known isomers for the first time.
In this contribution, selected results from the analysis of the 2021 beamtime data will be presented, with emphasis on the studies of isomeric states.