Freiburg 2024 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 4: Poster

MS 4.3: Poster

Dienstag, 12. März 2024, 17:00–19:00, Aula Foyer

Recent measurements and developments at Isoltrap — •Christoph Schweiger and Daniel Lange for the ISOLTRAP collaboration — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

Isoltrap [1] is a multi ion-trap mass spectrometer located at ISOLDE/CERN dedicated to high-precision mass measurements of artificially produced, short-lived, exotic radionuclides far from stability. Experimentally, Isoltrap employs multi-reflection time-of-flight and Penning trap mass spectrometry for absolute and relative mass measurements. The measured masses can be connected to nuclear binding energies using Einsteins famous relation between mass and energy: E=mc². The nuclear binding energy reflects all underlying interactions in the nucleus and allows the study of nuclear structure and nuclear astrophysics, the weak interaction and further fundamental physics applications. The current status of the experimental setup and recent technical developments will be presented as well as the results of the most recent beamtime periods. This includes the neutron deficient ^{97, 98}Cd ground states in vicinity of the doubly-magic ¹⁰⁰Sn and the ^97mCd isomeric state as well as the first mass measurements of the neutron rich ^{209, 210}Hg. A measurement of the ^79mZn isomer resolved the state ordering of the 1/2+ and 5/2+ states and solidifies previous evidence of shape coexistence [2].
[1] Lunney, D. et al., J. Phys. G: Nucl. Part. Phys. 44, 064008 (2017)
[2] Nies, L. et al., arXiv:2310.16915v1 (2023)

Keywords: Mass spectrometry; MR-ToF; Penning traps; Nuclear physics; Radionuclides