Flash x-ray measurements have been made in experiments involving the interaction of a M_s = 1.66 shock wave with a particle curtain at in initial volume fraction of about 21%. Radiographs were used to produce volume fraction profiles using the Beer-Lambert law. Following shock impingement, the particles propagated downstream with the peak volume fraction decreasing to about 5% in about 280 microseconds. The propagation occurred in an asymmetric fashion, with the downstream side of the particles experiencing a greater volume fraction gradient than the upstream side. These new data provide a unique view of particle transport inside a compressible, dense gas-solid flow of high optical opacity.
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