Study on the Emission Spectra from Fast Reaction of Aluminum Powder

Optical multichannel analyzer (OMA) was used to investigate the emission spectra from the fast reaction of aluminum powders driven by hydrogen-oxygen detonation in shock tube. The spectra from the reactions of two sizes of aluminum powders throughout of the 240～850 nm wavelength region has been determined experimentally with a resolution of 0.6 nm at various pressures. Higher resolution (0.071 nm resolution) spectroscopic were also made in several region of interest in the 240～850 nm wavelength region. The spectra measurements in this study were dominated by continuum radiation. The intense blue-green emission of the AlO B2+X2+ transition was also present.