Hyperfine induced interference effects in the 4s4d D-3(2)-4s4f F-3(2,3) transitions in GaII

We report relativistic multiconfiguration Dirac-Hartree-Fock calculations of transitions between the hyperfine levels of 4s4f F-3(2,3) and 4s4d D-3(2) in Ga II. The capacity of two newly developed programs connected to the grasp VU package for generating synthetic spectra is explored. The obtained theoretical spectra are compared to Fourier transform spectra and good agreement is found. The importance of hyperfine induced interference effects for the 4s4d D-3(2)-4s4f F-3(2) transitions is pointed out, and the gf values for all the hyperfine transitions are given.