Journal of the Optical Society of America · 1971 · 25 citations · 0 references
Natural SciencesPhysicsNuclear PhysicsSolid State PhysicsSpectroscopyElectronic Excited StatesLaser SpectroscopyNuclear SpectroscopyCoincidence MeasurementsDecay TimeExcited-state LifetimeLifetimes Of Excited StatesNuclear LifetimesPressure DependenceRadiative Decay RateRadiative Lifetimes
The lifetime of the A1Π state of CO has been measured by using a pulsed invertron-excitation source and a delayed-coincidence measurement technique. The fourth positive system was examined to measure this lifetime. Eighteen bands, originating from the upper states υ′ = 0 to 5, were examined at pressures between 500 and 50 mtorr. No pressure dependence was noticed. The transition moment was found to vary and was expanded about the r centroid of the (0,0) transition. Oscillator strengths from this and other experiments are compared.