Beta-decay energies and masses ofIn103−105

Decay energies of ${}_{}{}^{103-105}{}_{}{}^{}\mathrm{In}$ have been determined by $\beta -\gamma$ coincidence spectroscopy on sources obtained from an on-line mass separator. Comparisons of the measured decay energies and deduced masses are made with the predictions of several different theoretical models. The ${}_{}{}^{103}{}_{}{}^{}\mathrm{In}$ mass is found to be more bound by 1 MeV than predicted by most models, which reproduce adequately the masses of the heavier indium isotopes. Systematic trends of the masses and neutron separation energies of the indium isotopes between the closed $N=50\mathrm{}$ and 82 shells are presented.