Atomic transition probabilities of FI spectral lines from 3s-3p and 3p-3d transition arrays

We have measured the relative transition probabilities of about 100 3s-3p a nd 3p-3d lines of neutral fluorine in the visible and near-infrared spectru m with a wall-stabilized high-current are, which is operated under conditio ns very dose to partial local thermodynamic equilibrium. The set of measure d lines includes about 40 intersystem transitions. Our data have been place d on an absolute scale by normalizing several strong transitions to the res ults of the OPACITY Project calculations, which are expected to be quite ac curate for such transitions. We estimate that the uncertainties of our abso lute transition probability values are in the +/- 15% to +/- 20% range, whi le the uncertainties of the relative values do not exceed 6%, except for ve ry weak transitions. Our results indicate that especially for 3p-3d transit ions appreciable departures from LS coupling are encountered. Comparisons w ith other results indicate that earlier experimental data agree well with o urs on a relative scale, but need to be renormalized. [S1050-2947(99)03408- 3].