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The elastic-plastic response of aluminum films to ultrafast laser-generated
shocks
File(s)
Author(s)
Whitley, V
McGrane, S
Eakins, D
Bolme, C
Moore, D
Type
Journal Article
Abstract
We present the free surface response of 2, 5, and 8 m aluminum films to shocks generated from chirped ultrafast lasers. We find two distinct steps to the measured free surface velocity that indicate a separation of the faster elastic wave from the slower plastic wave. We resolve the separation of the two waves to times as short as 20 ps. We measured peak elastic free surface velocities as high as 1.4 km/s corresponding to elastic stresses of 12 GPa. The elastic waves rapidly decay with increasing sample thickness. The magnitude of both the elastic wave and the plastic wave and the temporal separation between them was strongly dependent on the incident laser drive energy.
Date Issued
2011-01-05
Date Acceptance
2010-09-29
Citation
Journal of Applied Physics, 2011, 109
URI
DOI
ISSN
0021-8979
Publisher
American Institute of Physics
Journal / Book Title
Journal of Applied Physics
Volume
109
Copyright Statement
Copyright © 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in 'The elastic-plastic response of aluminum films to ultrafast laser-generated shocks' V. H. Whitley, S. D. McGrane, D. E. Eakins, C. A. Bolme, D. S. Moore and J. F. Bingert, J. Appl. Phys. 109, 013505 (2011) and may be found at https://dx.doi.org/10.1063/1.3506696
Publication Status
Published
Article Number
013505