Speaker
Description
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 $^{97}\text{Cd}$ and the excitation energy of the $^{97\text{n}}\text{Cd}$ high-lying isomer along with a precise measurement of $^{98}\text{Cd}$ in the immediate vicinity of self-conjugate doubly magic $^{100}\text{Sn}$ ($N=Z=50$) will be presented together with measurements of neutron-rich $^{209,210}\text{Hg}$.
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 isobaric contaminated beams.
[1] D. Lunney et al., J. Phys. G: Nucl. Part. Phys. 44 (2017) 064008
