Transition probabilities and Stark-broadening parameters of neutral and singly ionized lead

Abstract
Strengths and Stark widths of the prominent visible PbI and PbII lines are measured in emission by means of a gas-driven shock tube. Absolute ionic line strengths for 7s7p and 7p7d arrays conform well to quantum-mechanical sum rules and agree with theoretical predictions, but 6d5f results differ markedly from central-field approximations. Neutral-line strengths agree satisfactorily with available comparison data. Semiempirical theory predicts the widths of PbII lines with characteristic reliability of better than 25%.