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  5. Measurement of Mutual Diffusion in Warm Dense Matter

Measurement of Mutual Diffusion in Warm Dense Matter

Tilo Doeppner | 21-ERD-029

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, T.G. White, W. Theobald, A. Saunders, Y. Ping, O. Landen, L. Divol and T. Doeppner, "Developing x-ray Fresnel Diffractive-Refractive Radiography for Measuring Mutual Diffusion in Warm Dense Matter." 62nd Annual Meeting of the American Physical Society Division of Plasma Physics, November 2020. LLNL-PRES-817703.

Allen, C.H., M. Oliver, T.G. White, W. Theobald, A. Saunders, Y. Ping, O. Landen, L. Divol and T. Doeppner, "Developing x-ray Fresnel Diffractive-Refractive Radiography for Measuring Mutual Diffusion in Warm Dense Matter." 23rd Topical Conference on High-Temperature Plasma Diagnostics (HTPD), December 2020. LLNL-PRES-817704.

Allen, C.H., M. Oliver, L. Divol, O. Landen, Y. Ping, M. Schoelmerich, W. Theobald, T. Doeppner and T.G. White, "Development of slit projection radiography with 1µm resolution at the Omega Laser Facility." OSA Imaging and Applied Optics Congress, Vancouver, July 2021. LLNL-PRES-825433.

Allen, C.H., M. Oliver, L. Divol, A. Kemp, O. Landen, Y. Ping, M. Schoelmerich, W. Theobald, T. Doeppner and T.G. White, "Measuring Dynamic Density Gradients in Warm Dense Matter with 1 µm Spatial Resolution." OSA Imaging and Applied Optics Congress, South Lake Tahoe, September 2021. LLNL-PRES-827034.

White, T.G, T. Doeppner, C.H. Allen, M. Oliver, L. Divol, A. Kemp, O. Landen, Y. Ping, M. Schoelmerich, W. Theobald, A. Saunders, D. Gericke, Z. Karmioal, and C. Spindloe, "Fresnel Diffractive Radiography (FDR) at Omega and NIF." 16th International Conference on the Physics of Non-Ideal Plasmas, Dresden, September 2021. LLNL-PRES-827035.