Energy Flow in Thin Shell Implosions and Explosions

Dataset · Fri Jun 25 04:00:00 EDT 2021

DOI:https://doi.org/10.7910/DVN/WWDU5L· OSTI ID:1887431

Ruby, J. J. ^[1]; Rygg, J. R.; Chin, D. A.; Gaffney, J. A.; Adrian, P.; Forrest, C. J.; Glebov, V. Yu.; Kabadi, N. V.; Nilson, P. M.; Ping, Y.; Stoeckl, C.; Collins, G. W.

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1. OSTI

Energy flow and balance in convergent systems beyond petapascal energy densities controls the fate of late-stage stars and the potential for controlling thermonuclear inertial fusion ignition. Timeresolved x-ray self-emission imaging combined with a Bayesian inference analysis is used to describe the energy flow and the potential information stored in the rebounding spherical shock at 0.22 petaPascal (2.2 Gbar or billions of atmospheres pressure). This analysis, together with a simple mechanical model, describes the trajectory of the shell and the time history of the pressure at the fuel-shell interface, ablation pressure, and energy partitioning including kinetic energy of the shell and internal energy of the fuel. The techniques used here provide a fully self-consistent uncertainty analysis of integrated implosion data, a thermodynamic-path independent measurement of pressure in the petaPascal range, and can be used to deduce the energy flow in a wide variety of implosion systems to petapascal energy densities.

• Research Organization: Univ. of Rochester, NY (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
• DOE Contract Number: NA0003856; SC0019269; NA0003960; AC52-07NA27344
• OSTI ID: 1887431
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
73 NUCLEAR PHYSICS AND RADIATION PHYSICS