Hannover 2016 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 1: Precision Mass Spectrometry and Fundamental Applications I
MS 1.3: Vortrag
Montag, 29. Februar 2016, 11:45–12:00, f128
High-precision mass measurements around N = 152 at TRIGA-TRAP — •Dennis Renisch1, Klaus Blaum2, Michael Block1,3,4, Christoph Düllmann1,3,4,5, Klaus Eberhardt1,4, Jessica Grund1,5, Jacques van de Laar1,5, Szilard Nagy2, Fabian Schneider1,5,6, and Klaus Wendt5,6 — 1Institut für Kernchemie, Johannes Gutenberg-Universität, Mainz — 2Max-Planck-Institut für Kernphysik, Heidelberg — 3GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt — 4Helmholtz-Institut Mainz, Mainz — 5PRISMA Cluster of Excellence, Johannes Gutenberg-Universität, Mainz — 6Institut für Physik, Johannes Gutenberg-Universität, Mainz
The heaviest nuclei owe their existence to stabilizing nuclear shell effects. The mapping of the strength of these shell effects in the heaviest elements and their extension in atomic number is possible e.g. by the measurement of neutron separation energies using high-precision mass spectrometry. The Penning-trap mass spectrometer TRIGA-TRAP, located at the TRIGA Mainz research reactor, is used to perform such measurements on long-lived transuranium isotopes that are still available in weighable quantities.
The ongoing measurement campaign comprises ten different nuclides from Z = 94 (Pu) to Z = 98 (Cf) in the vicinity of the deformed shell closure at N = 152. The masses of seven of the investigated nuclides are directly measured for the first time. In this contribution, the status of the measurements and selected results will be presented.