Picosecond x-ray diffraction studies of shocked single crystals

J. S. Wark; J. K. Belak; G. W. Collins; J. D. Colvin; H. M. Davies; M. Duchaineau; J. H. Eggert; T. C. Germann; J. Hawreliak; A. Higginbotham; B. L. Holian; K. Kadau; D. H. Kalantar; P. S. Lomdahl; H. E. Lorenzana; M. A. Meyers; W. Murphy; N. Park; B. A. Remington; K. Rosolankova; R. E. Rudd; M. S. Schneider; J. Sheppard; J. S. Stolken

doi:10.1117/12.674427

7 June 2006 Picosecond x-ray diffraction studies of shocked single crystals

J. S. Wark, J. K. Belak, G. W. Collins, J. D. Colvin, H. M. Davies, M. Duchaineau, J. H. Eggert, T. C. Germann, J. Hawreliak, A. Higginbotham, B. L. Holian, K. Kadau, D. H. Kalantar, P. S. Lomdahl, H. E. Lorenzana, M. A. Meyers, W. Murphy, N. Park, B. A. Remington, K. Rosolankova, R. E. Rudd, M. S. Schneider, J. Sheppard, J. S. Stolken

Author Affiliations +

Proceedings Volume 6261, High-Power Laser Ablation VI; 62610T (2006) https://doi.org/10.1117/12.674427
Event: High-Power Laser Ablation 2006, 2006, Taos, NM, United States

Abstract

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.

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J. S. Wark, J. K. Belak, G. W. Collins, J. D. Colvin, H. M. Davies, M. Duchaineau, J. H. Eggert, T. C. Germann, J. Hawreliak, A. Higginbotham, B. L. Holian, K. Kadau, D. H. Kalantar, P. S. Lomdahl, H. E. Lorenzana, M. A. Meyers, W. Murphy, N. Park, B. A. Remington, K. Rosolankova, R. E. Rudd, M. S. Schneider, J. Sheppard, and J. S. Stolken "Picosecond x-ray diffraction studies of shocked single crystals", Proc. SPIE 6261, High-Power Laser Ablation VI, 62610T (7 June 2006); https://doi.org/10.1117/12.674427

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