Journal or Book Title
Journal of Applied Physics
Spatially and temporally resolved temperature measurements behind an expanding blast wave are made using picosecond (ps) N2 coherent anti-Stokes Raman scattering (CARS) following laser flash heating of mixtures containing aluminum nanoparticles embedded in ammonium-nitrate oxidant. Production-front ps-CARS temperatures as high as 3600 ± 180 K-obtained for 50-nm-diameter commercially produced aluminum-nanoparticle samples-are observed. Time-resolved shadowgraph images of the evolving blast waves are also obtained to determine the shock-wave position and corresponding velocity. These results are compared with near-field blast-wave theory to extract relative rates of energy release for various particle diameters and passivating-layer compositions.
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Roy, Sukesh; Jiang, Naibo; Stauffer, Han U.; Schmidt, Jacob B.; Kulatilaka, Waruna D.; Meyer, Terrence R.; Bunker, Christopher E.; and Gord, James R., "Spatially and temporally resolved temperature and shock-speed measurements behind a laser-induced blast wave of energetic nanoparticles" (2013). Mechanical Engineering Publications. 161.