Experimental β-decay energies for short-lived isotopes of tin, antimony and tellurium are presented. Mass-separated sources were produced at the on-line isotope separator OSIRIS. By applying β-γ coincidence methods, total β-decay energies have been determined for the following nuclides: 127−131Sn, 128, 130, 131, 134Sb and 134, 135Te. The atomic mass excess has been derived for these nuclei, and
... [Show full abstract] comparisons are made with mass formula predictions.