Simple derivation of x-ray hypersatellite and two-electron--one-photon transition energies for low-Z atoms

Transition energies for x-ray hypersatellite lines (Kα2/sup h/) and two-electron--one-photon lines (Kα-Kα) have been calculated for low-Z atoms using a simple variational method with a two-electron correlated wave function. The method gives real insight into the structure of energies of the initial and final states. The results are very encouraging