Atomic Transition Probabilities of the Halogens

Abstract

Absolute transition probabilities in the visible and near-infrared spectra of FI, ClI, ClII, and BrI have been measured using a gas-driven shock tube. Thermodynamic conditions in the source were overdetermined by line intensity, pressure, and electron-density data. $A$ values were obtained by spectroscopic techniques which reduced errors due to residual uncertainties in the source conditions. Measured transition probabilities are compared with theoretical calculations and with other experimental values.