Measurement of select transition strengths and autoionizing lifetimes in atomic oxygen

We have located the ${(}^2$D°)4p’ ${}_{}{}^3{}_{}{}^{}$F and ${(}^2$D°)3p’ ${}_{}{}^3{}_{}{}^{}$P autoionizing states of atomic oxygen and measured the autoionization-dominated lifetimes for the ${(}^2$D°)3p’ ${}_{}{}^{1,3}{}_{}{}^{}$P, and ${(}^2$D°)3p’ ${}_{}{}^3{}_{}{}^{}$D${,}^3$F states. In addition, we have measured transition strengths for the ${(}^4$S°)3p ${}_{}{}^3{}_{}{}^{}$P to ${(}^2$D°)3s’ ${}_{}{}^3{}_{}{}^{}$D° and ${(}^2$D°)3s’ ${}_{}{}^3{}_{}{}^{}$D° to ${(}^2$D°)3p’ ${}_{}{}^{1,3}{}_{}{}^{}$P${,}^3$D${,}^3$F transitions, and characterized the 2${\mathit{p}}^4$ ${}_{}{}^3{}_{}{}^{}$P to ${(}^4$S°)3p ${}_{}{}^3{}_{}{}^{}$P two-photon resonance for saturating light intensities. In making these original measurements, we use a variety of multiphoton-ionization methods, including Rabi-oscillation and damped-Rabi-oscillation methods.