The use of multi-pass time-of-flight mass analyzers for nuclear-decay spectroscopy of mass identified nuclei

The masses of ions of some keV can be determined in multi-pass time-of-flig ht mass analyzers [1,2] with high precision. The mass accuracies thus achie ved are sufficient to determine the proton and neutron numbers for most sho rt-lived and stable nuclei [3,5]. Recording alpha- or gamma -radiation of t he investigated nuclei in delayed coincidence to the ion arrival, one thus can perform nuclear spectroscopy of selected nuclei.