Femtosecond Visualization of Lattice Dynamics in Shock-Compressed Matter-Reference-Cited by-同舟云学术

Femtosecond Visualization of Lattice Dynamics in Shock-Compressed Matter

Published:2013-10-11 Issue:6155 Volume:342 Page:220-223
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Milathianaki D.¹,Boutet S.¹,Williams G. J.¹,Higginbotham A.²,Ratner D.¹,Gleason A. E.³,Messerschmidt M.¹,Seibert M. M.¹⁴,Swift D. C.⁵,Hering P.¹,Robinson J.¹,White W. E.¹,Wark J. S.²

Affiliation:

1. SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA.

2. Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, UK.

3. Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305, USA.

4. Department of Cell and Molecular Biology, Uppsala University, 751 24 Uppsala, Sweden.

5. Lawrence Livermore National Laboratory, Livermore, CA 94551, USA.

Abstract

Elastic to Plastic When a crystal is mechanically compressed, it first reacts elastically (reversibly), and then enters the plastic regime, in which the structure of the material is irreversibly changed. This process can be studied with molecular dynamics (MD) simulations on very fine temporal and spatial scales, but experimental analysis has lagged behind. Milathianaki et al. (p. 220 ) shocked polycrystalline copper with a laser beam, and then took successive snapshots of the crystal structure at 10-picosecond intervals. The results were compared directly with atomistic simulations and revealed that the yield stress—the point of transition from plastic to elastic response—agreed well with MD predictions.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference34 articles.

1. Dynamic compression of materials: metallization of fluid hydrogen at high pressures

2. Phase Transformations and Metallization of Magnesium Oxide at High Pressure and Temperature

3. An approach to achieve progress in spacecraft shielding

4. Ultrahigh Strength in Nanocrystalline Materials Under Shock Loading

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