Hyperspectral imaging pyrometer for reactive material combustion studies

The combustion of reactive materials presents a rich in-operando environment of optical information that is primed for in-situ observation and analysis. Typically, optical instruments for combustion studies aim to either record spectral information for pyrometry or other spectral analysis, or spatial information to capture structural evolution at small time scales. In doing so, vital information about the underlying dynamics of the combustion process is neglected. To capture a wholistic view of reactive scenes, we demonstrate a hyperspectral imaging pyrometer to capture the evolution of combusting powders or compacts both spatially and spectrally, while retaining high enough temporal resolution to capture the evolution of the reaction. This spectral information allows for local information about the reaction to be extracted, such as temperature, spectral emissions, and relative emissivity.