GENERALIZED OSCILLATOR-STRENGTHS FOR BERYLLIUM ATOM IN THE RANDOM-PHASE APPROXIMATION WITH EXCHANGE

The generalized oscillator strengths for the transitions from the ground state to the excited discrete and continuous states of the beryllium atom are calculated in the framework of the random-phase approximation with exchange for a range of momentum transfer values from 0 to 3 a.u. The results for the 2s→2p transition are compared with calculations of Sinanoglu and Davis and good agreement is obtained. Also the influence of electron correlation is examined for the transitions to the lowest excited states in the discrete and continuous spectrum, as for these transitions the influence is strongest. © 1979 American Institute of Physics.