FORBIDDEN TRANSITIONS OF ASTROPHYSICAL INTEREST IN THE 5P(KAPPA) (KAPPA=1-5) CONFIGURATIONS

Energy levels and radiative transition probabilities have been calcula ted for states within the 5p(k) (k = 1-5) configurations of atoms and ions in the indium, tin, antimony, tellurium and iodine isoelectronic sequences up to cerium. Magnetic dipole (M1) and electric quadrupole ( E2) transition probabilities have been obtained using average energies , electrostatic and spin-orbit integrals adjusted so as to fit the obs erved energy levels or in the absence of experimental data by graphica l extrapolation along the sequences. The most important configuration interaction (CI) and relativistic effects were included explicitly in the calculations, using the relativistic Hartree-Fock (HFR) method due to Cowan. For many of the forbidden lines of astrophysical interest c onsidered in the present work, transition probabilities are reported f or the first time.