Plasma Waves and the Compressibility of Warm Dense Hydrogen

ORAL

Abstract

Recent experiments on single- and double-shocked liquid deuterium[1,2] have provided new evidence for increased compressibility of hydrogen compared to theoretical models in the warm-dense-matter regime between 200 and 1000 GPa. We show that a specific heat contribution from plasma waves, not explicitly included in the theoretical models, is sufficient to explain the discrepancy. 
 
[1] A. Fernandez-Pañella et al., Phys. Rev. Lett. 122, 255702 (2019).


[2] D. E. Fratanduono et al., Phys. Plasmas 26, 012710 (2019).

*This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856, the University of Rochester, NSF Physics Frontier Center award PHY-2020249, U.S. Department of Energy, Office of Science, Fusion Energy Sciences under Award No. DE-SC0020340 and the New York State Energy Research and Development Authority.

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Publication: Manuscript in preparation for submission to PRL, likely with same title and authors.

Presenters

  • J. Ryan R Rygg

    • University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester

Authors

  • J. Ryan R Rygg

    • University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester

  • Gilbert Collins

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester

  • Peter M Celliers

    • Lawrence Livermore Natl Lab