0000000000522517
AUTHOR
Wolfgang L. Wiese
Atomic transition probabilities of F I spectral lines from3s−3pand3p−3dtransition arrays
We have measured the relative transition probabilities of about $100 3s\ensuremath{-}3p$ and $3p\ensuremath{-}3d$ lines of neutral fluorine in the visible and near-infrared spectrum with a wall-stabilized high-current arc, which is operated under conditions very close to partial local thermodynamic equilibrium. The set of measured lines includes about 40 intersystem transitions. Our data have been placed on an absolute scale by normalizing several strong transitions to the results of the OPACITY Project calculations, which are expected to be quite accurate for such transitions. We estimate that the uncertainties of our absolute transition probability values are in the \ifmmode\pm\else\textp…
Transition probability ratios for selected multiplets of C I, N I, and O I, and comparisons with recent calculations
With a wall-stabilized high-current arc, we have measured the transition probabilities 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 features of their respective spectra, and the pairing is in each case done for multiplets that hardly differ in their excitation energies. Our results do not favor either of the calculations, but are consistent with an earlier experiment.