Energies, fine structure, and radiative transitions of the high-lying core-excited states and () for the boron isoelectronic sequence

The Rayleigh–Ritz variation method using a multiconfiguration interaction wavefunction is carried out on the high-lying core-excited states 6 S e , o ( n ) and 6 P e , o ( n ) ( n = 1 – 5 ) for the boron isoelectronic sequence ( Z = 6 – 10 ), including mass polarization and relativistic corrections. Energy levels, fine structure, transition rates, and transition wavelengths for this system are calculated. Some energy levels of the high- n states are reported for the first time. Wavelengths of the electric-dipole transitions from these core-excited sextet states with quantum electro-dynamical effects and higher-order relativistic corrections are included. The lifetimes of the 1 s 2 s 2 p 2 3 p 6 S o , 1 s 2 p 3 3 s 6 S o , 1 s 2 s 2 p 2 3 s 6 P , 1 s 2 s 2 p 2 3 d 6 P , and 1 s 2 p 3 3 p 6 P states for the boron isoelectronic sequence are also reported. Our calculated results agree well in most cases with available theoretical and experimental data in the literature.