Oscillator strengths for bound states of beryllium isoelectronic sequence

A model-potential methods using selecting B-spline basis functions in a con figuration-interaction (CI) scheme is applied to study the bound states of the beryllium isoelectronic sequence (Z = 5 - 7). The energies and wave fun ctions of the bound 1s(2)2snl (1 less than or equal to 2), and 1s(2)2pnl L( L less than or equal to 2, L not equal l) states are calculated and used to calculate the oscillator strengths. Our length results of the oscillator s trengths for electric dipole transitions are accurate and can be achieved e fficiently for various states.