Effects of shock-breakout pressure on ejection of micron-scale material from shocked tin surfaces

This effort investigates the relation between ejecta production and shock-breakout pressure ( P SB ) for Sn shocked with a Taylor shockwave (unsupported) to pressures near the solid-on-release/partial melt-on-release phase transition region. The shockwaves were created by detonation of high explosiv...

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Bibliographic Details
Published in:Journal of applied physics 2007-07, Vol.102 (1), p.013522-013522-10
Main Authors: Zellner, M. B., Grover, M., Hammerberg, J. E., Hixson, R. S., Iverson, A. J., Macrum, G. S., Morley, K. B., Obst, A. W., Olson, R. T., Payton, J. R., Rigg, P. A., Routley, N., Stevens, G. D., Turley, W. D., Veeser, L., Buttler, W. T.
Format: Article
Language:English
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Summary:This effort investigates the relation between ejecta production and shock-breakout pressure ( P SB ) for Sn shocked with a Taylor shockwave (unsupported) to pressures near the solid-on-release/partial melt-on-release phase transition region. The shockwaves were created by detonation of high explosive (HE) PBX-9501 on the front side of Sn coupons. Ejecta production at the backside or free side of the Sn coupons was characterized through use of piezoelectric pins, optical shadowgraphy, x-ray attenuation radiography, and optical-heterodyne velocimetry. Ejecta velocities, dynamic volume densities, and areal densities were then correlated with the shock-breakout pressure of Sn surfaces characterized by roughness average of R a = 16   μ in or R a = 32   μ in .
ISSN:0021-8979
1089-7550
DOI:10.1063/1.2752130