M. Breitenfeldt

Probing the N = 32 Shell Closure below the Magic Proton Number Z = 20: Mass Measurements of the Exotic Isotopes52,53K

The recently confirmed neutron-shell closure at N=32 has been investigated for the first time below the magic proton number Z=20 with mass measurements of the exotic isotopes (52,53)K, the latter being the shortest-lived nuclide investigated at the online mass spectrometer ISOLTRAP. The resulting two-neutron separation energies reveal a 3 MeV shell gap at N=32, slightly lower than for 52Ca, highlighting the doubly magic nature of this nuclide. Skyrme-Hartree-Fock-Bogoliubov and ab initio Gorkov-Green function calculations are challenged by the new measurements but reproduce qualitatively the observed shell effect.

First detection and energy measurement of recoil ions following beta decay in a Penning trap with the WITCH experiment

Abstract.The WITCH experiment (Weak Interaction Trap for CHarged particles) will search for exotic interactions by investigating the

Electron shakeoff following the Β+ decay of trapped 35Ar+ ions

beta

Performance of Geant4 in simulating semiconductor particle detector response in the energy range below 1 MeV

-

Hyperfine Field and Hyperfine Anomalies of Copper Impurities in Iron

nu

Electron shakeoff following the

angular correlation via the measurement of the recoil energy spectrum after

{\beta}^{+}

beta

decay of

-decay. As a first step the recoil ions from the

^{19}\mathrm{Ne}^{+}

beta^{-}_{}

and

-decay of 124In stored in a Penning trap have been detected. The evidence for the detection of recoil ions is shown and the properties of the ion cloud that forms the radioactive source for the experiment in the Penning trap are presented.