Atomic data from the Iron Project - XLIII. Transition probabilities for Fe V

An extensive set of dipole-allowed, intercom- bination, and forbidden transition probabilities for Fe V is presented. The Breit-Pauli R-matrix (BPRM) method is used to calculate 1:46 10 6 oscillator strengths for the allowed and intercombination E1 transitions among 3865 ne-structure levels dominated by conguration complexes with n 10 and l 9. These data are comple- mented by an atomic structure conguration interaction (CI) calculation using the SUPERSTRUCTURE program for 362 relativistic quadrupole (E2) and magnetic dipole (M1) transitions among 65 low-lying levels dominated by the 3d 4 and 3d 3 4s congurations. Procedures have been developed for the identication of the large number of ne-structure levels and transitions obtained through the BPRM calculations. The target ion Fe VI is represented by an eigenfunction expansion of 19 ne-structure levels of 3d 3 and a set of correlation congurations. Fe V bound levels are obtained with angular and spin symmetries SL and J of the (e + Fe VI) system such that 2S +1 =5 , 3, 1,L 10, J 8 of even and odd parities. The completeness of the calculated dataset is veried in terms of all possible bound levels belonging to relevant LS terms and transitions in correspondence with the LS terms. The ne-structure averaged relativistic values are compared with previous Opacity Project LS coupling data and other works. The 362 forbidden transition probabilities considerably extend the available data for the E2 and M1 transtions, and are in good agreement with those computed by Garstang for the 3d 4 transitions.