Abstract
This work discusses the optical systems with brightness amplification based on two copper bromide brightness amplifiers for studying the combustion of aluminum-based nanopowders. It is proposed to use a system with brightness amplification and independent illumination–bistatic laser monitor to increase the brightness and sharpness of images. Independent illumination is realized using a second copper bromide laser and makes it possible to increase the exposure of the object under investigation in comparison with the conventional laser monitor with one brightness amplifier. In addition to independent illumination, a two-channel laser monitor is proposed to examine the surface of burning materials with different magnifications in one area of the sample, as well as simultaneously in two areas of the sample. The delay between the lasing pulses of the brightness amplifiers can be adjusted with high accuracy so that the radiation from one amplifier does not affect the images of the other. The proposed experimental technique makes it possible to investigate the surface of powder materials during high-temperature combustion, accompanied by intense glowing and scattering of combustion products. This article presents the results of real-time visualization of the surface of burning metal nanopowders and mixtures using bistatic and two-channel laser monitors.
Published Version
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