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Title: Tailored ramp-loading via shock release of stepped-density reservoirs

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.3699361· OSTI ID:1458655
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  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. General Atomics, San Diego, CA (United States)
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The concept of a gradient piston drive has been extended from that of a single component reservoir, such as a high explosive, to that of a multi-component reservoir that utilizes low density foams and large shocks to achieve high pressures (~ 3.5 Mbar) and controlled pressure vs. time profiles on a driven sample. Simulated and experimental drives shaped through the use of multiple component (including carbonized resorcinol formaldehyde and SiO2 foam) reservoirs are compared. Individual density layers in a multiple component reservoir are shown to correlate with velocity features in the measured drive which enables the ability to tune a pressure drive by adjusting the components of the reservoir. Pre-shot simulations are shown to be in rough agreement with data but post-shot simulations involving the use of simulated plasma drives were needed to achieve an exact match. Results from a multiple component reservoir shot (~3.5 Mbar) at the National Ignition Facility are shown.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1458655
Report Number(s):
LLNL-JRNL-520653; 545629; TRN: US1901490
Journal Information:
Physics of Plasmas, Vol. 19, Issue 5; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Cited By (4)

Direct Laser Writing of Low-Density Interdigitated Foams for Plasma Drive Shaping journal September 2017
Low-cost carbon nanotube aerogels with varying and controllable density journal March 2016
Bremsstrahlung x-ray generation for high optical depth radiography applications on the National Ignition Facility journal October 2018
Rayleigh–Taylor instabilities in high-energy density settings on the National Ignition Facility journal June 2018

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY