X-ray thermal diffuse scattering as a texture-robust temperature diagnostic for dynamically compressed solids
Abstract
We present a model of x-ray thermal diffuse scattering (TDS) from a cubic polycrystal with an arbitrary crystallographic texture, based on the classic approach of Warren. We compare the predictions of our model with femtosecond x-ray diffraction patterns obtained from ambient and dynamically compressed rolled copper foils obtained at the High Energy Density (HED) instrument of the European X-Ray Free-Electron Laser (EuXFEL), and find that the texture-aware TDS model yields more accurate results than does the conventional powder model owed to Warren. Nevertheless, we further show that: with sufficient angular detector coverage, the TDS signal is largely unchanged by sample orientation and in all cases strongly resembles the signal from a perfectly random powder; shot-to-shot fluctuations in the TDS signal resulting from grain-sampling statistics are at the percent level, in stark contrast to the fluctuations in the Bragg-peak intensities (which are over an order of magnitude greater); and TDS is largely unchanged even following texture evolution caused by compression-induced plastic deformation. We conclude that TDS is robust against texture variation, making it a flexible temperature diagnostic applicable just as well to off-the-shelf commercial foils as to ideal powders.
Cite
@article{arxiv.2508.04525,
title = {X-ray thermal diffuse scattering as a texture-robust temperature diagnostic for dynamically compressed solids},
author = {P. G. Heighway and D. J. Peake and T. Stevens and J. S. Wark and B. Albertazzi and S. J. Ali and L. Antonelli and M. R. Armstrong and C. Baehtz and O. B. Ball and S. Banerjee and A. B. Belonoshko and C. A. Bolme and V. Bouffetier and R. Briggs and K. Buakor and T. Butcher and S. Di Dio Cafiso and V. Cerantola and J. Chantel and A. Di Cicco and A. L. Coleman and J. Collier and G. Collins and A. J. Comley and F. Coppari and T. E. Cowan and G. Cristoforetti and H. Cynn and A. Descamps and F. Dorchies and M. J. Duff and A. Dwivedi and C. Edwards and J. H. Eggert and D. Errandonea and G. Fiquet and E. Galtier and A. Laso Garcia and H. Ginestet and L. Gizzi and A. Gleason and S. Goede and J. M. Gonzalez and M. G. Gorman and M. Harmand and N. Hartley and C. Hernandez-Gomez and A. Higginbotham and H. Höppner and O. S. Humphries and R. J. Husband and T. M. Hutchinson and H. Hwang and D. A. Keen and J. Kim and P. Koester and Z. Konopkova and D. Kraus and A. Krygier and L. Labate and A. E. Lazicki and Y. Lee and H-P. Liermann and P. Mason and M. Masruri and B. Massani and E. E. McBride and C. McGuire and J. D. McHardy and D. McGonegle and R. S. McWilliams and S. Merkel and G. Morard and B. Nagler and M. Nakatsutsumi and K. Nguyen-Cong and A-M. Norton and I. I. Oleynik and C. Otzen and N. Ozaki and S. Pandolfi and A. Pelka and K. A. Pereira and J. P. Phillips and C. Prescher and T. Preston and L. Randolph and D. Ranjan and A. Ravasio and J. Rips and D. Santamaria-Perez and D. J. Savage and M. Schoelmerich and J-P. Schwinkendorf and S. Singh and J. Smith and R. F. Smith and A. Sollier and J. Spear and C. Spindloe and M. Stevenson and C. Strohm and T-A. Suer and M. Tang and M. Toncian and T. Toncian and S. J. Tracy and A. Trapananti and T. Tschentscher and M. Tyldesley and C. E. Vennari and T. Vinci and S. C. Vogel and T. J. Volz and J. Vorberger and J. T. Willman and L. Wollenweber and U. Zastrau and E. Brambrink and K. Appel and M. I. McMahon},
journal= {arXiv preprint arXiv:2508.04525},
year = {2025}
}
Comments
22 pages, 13 figures in main article; 5 pages, 1 figure in supplementary material