Beta-decay energies of neutron-rich nuclei in the mass region 142?A?150

Abstract

The β-endpoint energies of 6 neutron-rich nuclei with mass numbersA=146 andA=147 have been measured with a plastic scintillator telescope at the on-line mass separator OSTIS. With theQβ-values derived from these experiments and with those obtained in earlier studies, nuclear structure effects in this part of the nuclear chart are investigated. In addition, nuclear masses derived from the experimentalQβ-values are compared with the predictions of theoretical mass calculations.