J. Sheppard

TL;DR: In situ x-ray diffraction studies of iron under shock conditions confirm unambiguously a phase change from the bcc (alpha) to hcp (epsilon) structure, and are in good agreement with large-scale nonequilibrium molecular dynamics simulations.

TL;DR: In this article, the phase change of shock-compressed iron along the [001] direction does transform to the $ϵ$ [hexagonal close-packed (hcp)] phase similar to the case for static measurements.

TL;DR: In this article, an indepth analysis of the experiment and NEMD simulations, using x-ray diffraction in both cases to study the crystal structure upon transition is provided.

TL;DR: In situ X-ray diffraction allows the determination of the structure of transient states of matter as discussed by the authors, which can be used to study how single crystals of metals (copper and iron) react to uniaxial shock compression.

TL;DR: In this article, a 19.6GPa simulated shock in single crystal iron and compare them to recent experimental results of shock compressed iron where the crystal structure was determined using in-situ wide angle x-ray diffraction.