Transition probability ratios for selected multiplets of CI, NI, and OI, and comparisons with recent calculations - art. no. 044502

With a wall-stabilized high-current arc,we have measured the transition pro babilities of several multiplet pairs of C I, N I, and O I. Pairs have been selected for which two recent ab initio calculations have produced widely different results. All chosen multiplets are among the prominent, strong fe atures of their respective spectra, and the pairing is in each case done fo r multiplets that hardly differ in their excitation energies. Our results d o not favor either of the calculations, but are consistent with an earlier experiment.