Measurement of Mutual Diffusion in Warm Dense Matter

Executive Summary

We are developing a novel diagnostic technique using diffractive radiography to measure particle diffusion with sub-1-micron spatial resolution across the interface of two warm dense matter samples. Successful results will open a new regime in high-energy-density science in support of stockpile stewardship and energy security missions.

Publications, Presentations, and Patents

Allen, C.H., M. Oliver, L. Divol, O.L. Landen, Y. Ping, M. Schoelmerich, R. Wallace, R. Earley, W. Theobald, T.G. White, and T. Doeppner. 2022. "Toward an Integrated Platform for Characterizing Laser-Driven, Isochorically Heated Plasmas with 1 μm Spatial Resolution." Appl. Optics 61(8), 1987 (2022).

Oliver, M., C.H. Allen, L. Divol, Z. Karmiol, O.L. Landen, Y. Ping, R. Wallace, M. Schoelmerich, W. Theobald, T. Doeppner, and T.G. White. 2022. " Diffraction Enhanced Imaging Utilizing a Laser Produced X-ray Source." Rev. Scient. Instrum. 93, 093502.

Allen, C.H., M. Oliver, L. Divol, A. Kemp, O.L. Landen, Y. Ping, M. Schoelmerich, W. Theobald, T. Doeppner, and T.G. White. "Developing x-ray Fresnel Diffractive-Refractive Radiography for Measuring Mutual Diffusion in Warm Dense Matter." 63rd Annual Meeting of the American Physical Society Division of Plasma Physics. November 2021. LLNL-PRES-840561.

Oliver, M., T. Doeppner, C. Allen, Y. Ping, L. Divol, A. Kemp, M. Schoelmerich, C. Spindloe, and T.G. White. " Scale Length Measurements in Warm Dense Matter." XFEL user group meeting, Hamburg, Germany. January 2022. LLNL-PRES-841075, IM# 1061923.

Allen, C.H., T.G. White, M. Oliver, L. Divol, A. Kemp, O.L. Landen, Y. Ping, M. Schoelmerich, W. Theobald, T. Doeppner. "Fresnel Diffractive Radiography Measurements of Transport Properties in Warm Dense Matter." 49th IEEE International Conference on Plasma Science, Seattle, WA. May 2022. LLNL-PRES-840560.

Schoelmerich, M.O., T. Doeppner, C. Allen, M. Biener, J. Delora-Ellefson, L. Divol, D.O Gericke, D. Haden, C. Heinbockel, D. Kalantar, A. Kemp, G. Kemp, O.L. Landen, M. Oliver, Y. Ping, W. Theobald, and T.G. White. " Developing a Platform for Fresnel Refractive-Diffractive Radiography with 1 μm Spatial Resolution at the National Ignition Facility." 24th Topical Conference on High Temperature Plasma Diagnostics. Rochester, NY. May 2022. LLNL-POST-835686.