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MS: Fachverband Massenspektrometrie
MS 1: Precision Mass Spectrometry
MS 1.4: Talk
Monday, March 11, 2024, 12:00–12:15, HS 3042
Re-measuring the nuclear masses of transuranium isotopes in the vicinity of the N=152 deformed neutron shell-closure — •Stanislav Chenmarev1, Szilard Nagy1, Klaus Blaum1, Michael Block2,3,4, Christoph E. Düllmann2,3,4, and Dennis Renisch3 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Helmholtz-Institut Mainz, Germany — 3Department Chemie - Standort TRIGA, Johannes Gutenberg-Universität, Mainz, Germany — 4GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
We have re-visited the region of actinides in the vicinity of the N=152 deformed neutron shell-closure, and repeated high-precision mass measurements using the newly implemented Phase Imaging Ion Cyclotron Resonance (PI-ICR) technique [1].
With our greatly improved apparatus we have measured the masses of 244Pu, 241Am, 243Am, 248Cm, 249Cf, taking 208Pb and 238U as mass references. The masses of these reference ions were recently determined with ultra-high-precision at Pentatrap [2].
Our results are in good agreement with the latest Atomic Mass Evaluation. The recent mass measurements as well as their comparison to the AME2020 values will be presented and discussed.
[1] Chenmarev, S., et al. Eur. Phys. J. A 59.2 (2023): 29.
[2] Kromer, K., et al. Eur. Phys. J. A 58.10 (2022): 202.
Keywords: Penning Trap Mass Spectroscopy; PI-ICR