Relativistic calculation of two-electron one-photon and hypersatellite transition energies for 12 ⩽ Z ⩽ 30 elements

Energies of two-electron one-photon transitions from initial double K-hole states were computed using the Dirac-Fock model. The transition energies of competing processes, the K$\alpha$ hypersatellites, were also computed. The results are compared to experiment and to other theoretical calculations.