Lawrence Livermore National Laboratory



Federica Coppari

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, Etc.

Briggs, R., et al., 2019. "A 'Shocking' Discovery of a New Phase of Gold." Lawrence Livermore National Laboratory Postdoctorate Poster Symposium, Livermore, CA, May 2019. LLNL-POST-773442.

——— . 2019. "First Observation of BCC Gold and Melting on the Shock Hugoniot Measured Using X-ray Diffraction." 21st Biennial Conference of the American Physical Society (APS) Topical Group on Shock Compression of Condensed Matter, Portland, OR, June 2019. LLNL-PRES-777690.

——— . 2019. "Measurement of Body-Centered Cubic Gold and Melting under Shock Compression." Physics Review Letters 123, 045701. doi: 10.1103/PhysRevLett.123.045701. LLNL-JRNL-782110.

Coppari, F. 2019. "X-ray Diagnostics for High Energy Density Science: Recent Developments on X-ray Diffraction and EXAFS Spectroscopy at the Omega and NIF Laser Facilities." Hopkins Extreme Materials Institute, Johns Hopkins University, January 2019. LLNL-PRES-767145.

——— . 2019. "X-ray Diffraction and EXAFS Spectroscopy to Study Material Properties Under Dynamic Extreme Conditions." The 27th AIRAPT International Conference on High Pressure Science and Technology, Rio de Janeiro, Brazil, August 2019. LLNL-PRES-784765.

——— . 2019. "A New Phase Transition in Laser-Shock Compressed Gold from X-ray Diffraction at the Dynamic Compression Sector Beamline." Italian Synchrotron Radiation Society (SILS), Camerino, Italy, September 2019. LLNL-PRES-789106.

——— . 2019. "Probing Material Properties in Laser-Driven Dynamic Compression Experiments with EXAFS." Department of Physics and Astronomy, University of Nevada Las Vegas, Las Vegas, NV, October 2019. LLNL-PRES-759184.