| Autor: |
J. Sheppard, Justin Wark, Andrew Higginbotham, J. Belak, Huw Davies, M. S. Schneider, Daniel H. Kalantar, Kai Kadau, James S. Stolken, Brad Lee Holian, William J. Murphy, Gilbert Collins, James Hawreliak, Marc A. Meyers, Jon Eggert, Mark A. Duchaineau, Bruce Remington, Hector Lorenzana, Nigel Park, Peter S. Lomdahl, K. Rosolankova, J. D. Colvin, Robert E. Rudd, Timothy C. Germann |
| Rok vydání: |
2016 |
| Předmět: |
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| Popis: |
The past few years have seen a rapid growth in the development and exploitation of X-ray diffraction on ultrafast time-scales. One area of physics which has benefited particularly from these advances is the the field of shock-waves. Whilst it has been known for many years that crystalline matter, subjected to uniaxial shock compression, can undergo plastic deformation and, for certain materials, polymorphic phase transformations, it has hitherto not been possible to observe the rearrangement of the atoms on the pertinent timescales. We have used laser-plasma generated X-rays to study how single crystals of metals (copper and iron) react to uniaxial shock compression, and observed rapid plastic flow (in the case of copper), and directly observed the famous alpha-epsilon transition in Iron. These studies have been complemented by large-scale multi-million atom molecular dynamics simulations, yielding significant information on the underlying physics.© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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