Chemiluminescence of AlO

Abstract
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.
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