Imaging Dynamics of Defects Far from Equilibrium

Leora Dresselhaus-Cooper | 18-ERD-063

Executive Summary

We are developing a new platform for probing nanoscale crystal defects embedded in materials and for imaging ultrafast structural changes in materials, such as those induced by shock waves, using dark-field x-ray microscopy. The resulting first-of-their-kind measurements will inform mechanistic models, enabling improved predictions of material properties under stress for applications in the fields of advanced materials and nuclear weapons science.

Publications, Presentations, Etc.

Dresselhaus-Cooper, L. E. 2019. "Directors Beamtime Summary: Defects and Radiation Damage at Ultrafast Timescales." PAL-XFEL, Pohang, South Korea, May 2019. LLNL-PRES-776234.

––– . 2019. "Imaging Mesoscale Defects with Dark-Field X-ray Microscopy." GRC X-ray Science, Easton, MA, July/August 2019. LLNL-POST-783862.

––– . 2019. "High Resolution X-ray Imaging: Experimental Techniques & Data Analysis." IUCr High Pressure Conference, Vienna, Austria, August 2019. LLNL-PRES-787807.

––– . 2019. "Time-Resolved Dark-Field X-ray Microscopy: Materials at the Mesoscale." Poster Contest Winner—GRC on X-ray Science, Easton, MA, August 2019. LLNL-PRES-787102.