Second shock ejecta measurements with an explosively driven two-shockwave drive

We develop and apply an explosively driven two-shockwave tool in material damage experiments on Sn. The two shockwave tool allows the variation of the first shockwave amplitude over range 18.5 to 26.4 GPa, with a time interval variation between the first and second shock of 5 to 7 μs. Simulations im...

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Bibliographic Details
Published in:Journal of applied physics 2014-09, Vol.116 (10)
Main Authors: Buttler, W. T., Oró, D. M., Olson, R. T., Cherne, F. J., Hammerberg, J. E., Hixson, R. S., Monfared, S. K., Pack, C. L., Rigg, P. A., Stone, J. B., Terrones, G.
Format: Article
Language:English
Subjects:
Amplitudes
Applied physics
Cavitation
Compressing
Ejecta
Ejection
Spallation
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Summary:We develop and apply an explosively driven two-shockwave tool in material damage experiments on Sn. The two shockwave tool allows the variation of the first shockwave amplitude over range 18.5 to 26.4 GPa, with a time interval variation between the first and second shock of 5 to 7 μs. Simulations imply that the second shock amplitude can be varied as well and we briefly describe how to achieve such a variation. Our interest is to measure ejecta masses from twice shocked metals. In our application of the two-shockwave tool, we observed second shock ejected areal masses of about 4 ± 1 mg/cm2, a value we attribute to unstable Richtmyer-Meshkov impulse phenomena. We also observed an additional mass ejection process caused by the abrupt recompression of the local spallation or cavitation of the twice shocked Sn.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4895053