Transition probabilities for Fe V |

S.N. Nahar, F. Delahaye, A.K. Pradhan, and C.J. Zeippen |

Astronomy & Astrophysics Supplement Series, 2000, Vol.144, pp.141-155 |

An extensive set of dipole-allowed, intercombination, and forbidden
transition probabilities for Fe V is presented. The Breit-Pauli R-matrix
(BPRM) method is used to calculate oscillator
strengths for the allowed and intercombination E1 transitions among
3865 fine-structure levels dominated by configuration complexes with
and .
These data are complemented by an atomic
structure configuration 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 and 3d4s configurations. Procedures have been developed
for the identification of the large number of fine-structure levels
and transitions obtained through the BPRM calculations. The target
ion Fe VI is represented by an eigenfunction expansion of 19 fine-structure
levels of 3d and a set of correlation configurations. Fe V bound
levels are obtained with angular and spin symmetries and
of the (e+ Fe VI) system such that 2*S*+1 = 5, 3, 1, 10,
of even and odd parities. The completeness of the calculated
dataset is verified in terms of all possible bound levels belonging to
relevant LS terms and
transitions in correspondence with the LS terms. The fine-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 transitions.