Multireference relativistic configuration interaction calculations for 2s²2p ²P _3/2 ²P _1/2 M1 and E2 transitions in boron isoelectronic sequence

Fine-structure separations and M1 and E2 transition probabilities for the lowest P-2 doublet of boron-like ions, from Z = 10 to 30, have been calculated using the multireference relativistic configuration interaction (MRCI) method based on the no-pair Dirac-Coulomb-Breit Hamiltonian. Analytic basis sets of Gaussian-type functions are employed to expand the upper and lower components of the Dirac four-spinors in the matrix Dirac-Fock self-consistent field and relativistic MRCI procedures.