Freiburg 2024 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 1: Precision Mass Spectrometry
MS 1.6: Vortrag
Montag, 11. März 2024, 12:30–12:45, HS 3042
Recent mass measurements at ISOLTRAP — •Daniel Lange for the ISOLTRAP collaboration — Max-Planck-Institut für Kernphysik, Heidelberg, Germany
High-precision mass measurements of radioactive ions are used to determine nuclear binding energies, which reflect all forces acting in the nucleus and are used to study among others nuclear structure, nuclear astrophysics, and weak interaction.
For this, the ISOLTRAP mass spectrometer at ISOLDE/CERN [1] uses various ion traps, including a tandem Penning-trap system and a multi-reflection time-of-flight mass spectrometer (MR-ToF MS), where the latter is suitable of both mass separation and fast, precise mass measurements.
In this contribution, the first direct mass measurements of neutron-deficient 97Cd and the excitation energy of the 97mCd high-lying isomer along with a precise measurement of 98Cd in the immediate vicinity of self-conjugate doubly magic N=Z=50 100Sn will be presented together with measurements of neutron-rich 209,210Hg.
Additionally, the current setup of the ISOLTRAP experiment is introduced together with the future re-bunching system using a new Mini-RFQ behind the MR-ToF MS to enable measurements of extremely contaminated beams.
[1] Lunney D. et al., J. Phys. G: Nucl. Part. Phys. 44 (2017) 064008
Keywords: Mass Spectrometry; MR-ToF; Penning Trap; Exotic Radionuclides; Nuclear Physics