Lifetimes of the C 3 Δ state of TiO have been measured for vibrational levels v ′ = 0 to 2 from the decay of photoluminescence excited in a chemiluminescent flame by a short-pulsed (5 nsec) tunable dye laser. Radiative lifetimes of τ v ′=0 = 37 ± 9 nsec, τ v ′=1 = 29 ± 7 nsec, τ v ′=2 = 28 ± 7 nsec were obtained and were used to estimate oscillator strengths which were found to be in good agreement with earlier values based on intensity measurements.

Photon yields, chemiluminescence, and excitation spectra of gas phase reactions of atomic copper with F2, NF3, and SF6 have been obtained between 400 and 1000 nm. Distributions of excited state populations of the products of these reactions and vibrational constants of four previously unreported bands of CuF were measured. A pulsed tunable dye laser was used for excitation of CuF produced in chemical reactions or by thermal dissociation of CuF2. Analysis of rotationally resolved excitation spectra gives a new value of Bo=0.3692cm−1 for the B 1Σ state of CuF. Radiative lifetimes of 7.3 μsec for the A state, 1.2 μsec for the B state, and 0.6 μsec for the C state have been measured through an exponential fit to decays of photoluminescence following laser pulses. Additionally a lifetime of 0.2 to 2 msec for the upper state of the red system has been estimated from relative intensity measurements of the four states observed in chemiluminescence.

Emission from the a 3II state to the ground state X1Σ+ of aluminum monofluoride, AIF, has been observed from flames produced by reactions of Al with SF6, NF3, and F2. The observed spectrum confirms the calculated value of Barrow et al. of the triplet-singlet separation. Pressure dependence of the emission has been studied and interpreted in terms of production and quenching processes.

Ultraviolet, visible, and near ir emission has been observed from flames produced by reactions of Al atoms with various oxidants. Spectra of the flames and photon yields for the reactions were measured. Emission from the A, B, and C states to the ground state of AlO has been identified. A continuumlike emission between 280 and 750 nm also has been observed; it is suggested that this emission is not from diatomic aluminum oxide. Photon yields obtained are 3% for Al + microwave discharged O2, 2% for O3, 0.4% for N2O, and less than 0.005% for O2, CO2, NO2, NO, and CO.