Low Adiabat Compression of Liquid Deuterium Filled Cylindrical Liners to 0.1?2 Gbar.

Program Document · Wed Jul 01 00:00:00 EDT 2015

OSTI ID:1427287

Knapp, Patrick; Martin, Matthew; Dalton, Devon; Davis, Jean-Paul; Romero, Dustin Heinz; Cochrane, Kyle Robert; Loisel, Guillaume Pascal; Mattsson, Thomas Kjell Rene; McBride, Ryan D; Sinars, Daniel

We report on experiments where cylindrical beryllium liners filled with liquid deuterium were compressed to extreme pressure and density with current pulse shaping. In one set of experiments the pressure at stagnation is inferred to be & 100 Mbar using penetrating radiography. A peak liner convergence ratio (initial radius over final radius) of 7.6 was measured resulting in an average deuterium density of 10 g=cm³ and areal density of 0.45 g=cm². The stagnation shock propagating radially outward through the liner wall was directly measured with a strength of ≈ 120 Mbar. In a second set of experiments the liner was imploded to a peak convergence of 19 resulting in a density of 55 g=cm³ and areal density of 0.5 g=cm². The pressure at stagnation in this experiment is estimated to be 2 Gbar. This platform enables the study of high-pressure, high-density, implosion deceleration and stagnation dynamics at spatial scales that are readily diagnosable (R ~ 0.1 -- 0.4 mm). Thus, these experiments are directly relevant to both Inertial Con nement Fusion and the study of material properties under extreme conditions.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1427287
• Report Number(s): SAND--2015-6239J; 606309
• Country of Publication: United States
• Language: English