Abstract and subjects
Shock-driven reactions in simple molecules often occur with densification along the reaction coordinate. Acrylonitrile (CH2CHCN) is a simple molecule that undergoes shock-driven reaction on the principal Hugoniot. Using in-situ embedded electromagnetic gauging techniques and the LANL large bore two-stage gas gun, multi-wave structures were observed in acrylonitrile indicating the formation of higher density shock-induced reaction intermediates and products. Using the data from the embedded gauge experiments, time-resolved Raman spectroscopy experiments were conducted to elucidate reaction species in shocked acrylonitrile, but it was found that the conditions became optically opaque even during the first wave at modest input conditions. A description of the time-resolved Raman system coupled to the LANL large-bore twostage light gas gun is also provided.