Subnanosecond x-ray diffraction from laser-shocked crystals

In situlattice measurement of the bcc phase boundary in Mg on the principal shock Hugoniot

“…In general, combined with temporally and spatially resolved lattice measurements provided by nanosecond x-ray diffraction [21], shock-loading can offer new insights into the transient phase transition mechanisms. The significance of nanosecond x-ray diffraction in the investigation of shock-induced phase transitions was recently demonstrated in the measurement of the α−ε transition in single crystal Fe [22].…”

Femtosecond X-Ray Diffraction Studies of the Reversal of the Microstructural Effects of Plastic Deformation during Shock Release of Tantalum

“…Here we use XRD to directly monitor lattice orientations during shock release. The technique of in situ XRD to study shock-compressed materi-als has been developed over several years utilizing a number of different shock drivers and x-ray sources, including diodes [24][25][26][27], laser-produced-plasmas [28][29][30][31][32][33] and 3 rd generation synchrotrons [34][35][36][37]. More recently, with the advent of 4 th generation light sources such as the Linac Coherent Light Source (LCLS) single-shot 100-fs diffraction patterns can be obtained from laser-shocked crystals, providing lattice-level information on a timescale shorter than even the fastest phonon period [38][39][40][41][42][43].…”

Application of new techniques for EOS data

“…Smoothing using random phase plates (RPP) to spread the beam profile (and defects) over a large area, smoothing by spectral dispersion (SSD), and other methods have been developed over the years for the inertial confinement fusion program. There have also been published techniques to measure melt in a solid material using x-ray diffraction [7]. The idea here is to create an x-ray source with a laser and use the crystallographic properties of solids to Bragg-diffract the x-rays onto a detector.…”