The decay properties of proton-rich nuclei with $Z=13\mathrm{}$–20 are investigated using measured binding energies of the analog neutron-rich nuclei and Coulomb energy shifts deduced from a parametrization of measured Coulomb displacement energies. Calculated binding energies and particle separation energies are compared to measurements and previous predictions where these are available. The positions of the one-proton and diproton drip lines are determined. Nuclides predicted to be proton stable but unstable to two-proton emission include ${}^{22}\mathrm{Si},$ ${}^{31}\mathrm{Ar},$ and ${}^{34}\mathrm{Ca}.$

• Received 24 July 1998

DOI:https://doi.org/10.1103/PhysRevC.58.2831