Reflected Shock Experiments on the Equation-of-State Properties of Liquid Deuterium at 100–600 GPa (1–6 Mbar)

A. N. Mostovych; Y. Chan; T. Lehecha; A. Schmitt; J. D. Sethian

doi:10.1103/PhysRevLett.85.3870

Reflected Shock Experiments on the Equation-of-State Properties of Liquid Deuterium at 100–600 GPa (1–6 Mbar)

A. N. Mostovych, Y. Chan, T. Lehecha, A. Schmitt, and J. D. Sethian

Phys. Rev. Lett. 85, 3870 – Published 30 October 2000

Abstract

New laser-driven shock experiments have been used to study the equation-of-state (EOS) properties of liquid deuterium. Reflected shocks are utilized to increase the shock pressure and to enhance the sensitivity to differences in compressibility. The results of these experiments differ substantially from the predictions of the Sesame EOS. EOS models showing large dissociation effects with much greater compressibility (up to a factor of 2) agree with the data. By use of independent techniques, this experiment offers the first confirmation of an earlier observation of enhanced compressibility in liquid deuterium.

Received 7 January 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.3870

Authors & Affiliations

A. N. Mostovych¹, Y. Chan², T. Lehecha², A. Schmitt¹, and J. D. Sethian¹

¹Laser Plasma Branch, Plasma Physics Division, U.S. Naval Research Laboratory, Washington, D.C. 20375
²Science Applications International Corporation, McLean, Virginia 22102