Accurate Temperature Determination from X-Ray Diffraction and X-Ray Absorption Measurements

Federica Coppari | 18-ERD-001

Executive Summary

Because temperature is of fundamental importance in high-energy-density science but currently extremely difficult to measure experimentally, we are developing a method for determining temperature from x-ray diffraction and other measurements of condensed matter at high pressure. This research will impact many fields, including astronomy, materials science, and nuclear weapons science.

Publications, Presentations, and Patents

Briggs, R., et al. 2019. "Measurement of Body-Centered Cubic Gold and Melting under Shock Compression." Phys. Rev. Lett. 123, 45701. doi:10.1103/PhysRevLett.123.045701. LLNL-JRNL-782110

——— 2020a. "Phase transitions and Debye-Waller factor in shocked copper." LLNL-PRES-804438

——— 2020b. "Shocking discoveries at x-ray light sources." LLNL-PRES-804444

Coppari, F. 2020. "Dynamic compression at synchrotron light sources: a new phase transition in shock-compressed gold." LLNL-PRES-805229