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Improved Performance of High Areal Density Indirect Drive Implosions at the National Ignition Facility using a Four-Shock Adiabat Shaped Drive

Journal Article · · Physical Review Letters
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  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); High Energy Density Physics Division, Plasma Science and Fusion Center, Massachusetts Institute of Technology
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. General Atomics, San Diego, CA (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Hydrodynamic instabilities can cause capsule defects and other perturbations to grow and degrade implosion performance in ignition experiments at the National Ignition Facility (NIF). Here, we show the first experimental demonstration that a strong unsupported first shock in indirect drive implosions at the NIF reduces ablation front instability growth leading to a 3 to 10 times higher yield with fuel ρR > 1 g=cm2. This work shows the importance of ablation front instability growth during the National Ignition Campaign and may provide a path to improved performance at the high compression necessary for ignition.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
Sponsoring Organization:
USDOE; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344; NA0001857
OSTI ID:
1215665
Alternate ID(s):
OSTI ID: 1213751
OSTI ID: 1251048
Report Number(s):
LLNL-JRNL--670698
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 115; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (27)

Inertial-confinement fusion with lasers journal May 2016
Three-dimensional simulations of low foot and high foot implosion experiments on the National Ignition Facility journal March 2016
Performance of indirectly driven capsule implosions on the National Ignition Facility using adiabat-shaping journal May 2016
Resolving hot spot microstructure using x-ray penumbral imaging (invited) journal August 2016
Experimental results of radiation-driven, layered deuterium-tritium implosions with adiabat-shaped drives at the National Ignition Facility journal October 2016
Main drive optimization of a high-foot pulse shape in inertial confinement fusion implosions journal December 2016
Improving ICF implosion performance with alternative capsule supports journal May 2017
Hydrodynamic instability growth of three-dimensional modulations in radiation-driven implosions with “low-foot” and “high-foot” drives at the National Ignition Facility journal April 2017
Direct measurement of the inertial confinement time in a magnetically driven implosion journal April 2017
Hydro-instability growth of perturbation seeds from alternate capsule-support strategies in indirect-drive implosions on National Ignition Facility journal October 2017
The high velocity, high adiabat, “Bigfoot” campaign and tests of indirect-drive implosion scaling journal May 2018
Mitigation of X-ray shadow seeding of hydrodynamic instabilities on inertial confinement fusion capsules using a reduced diameter fuel fill-tube journal May 2018
Hydrodynamic instabilities seeded by the X-ray shadow of ICF capsule fill-tubes journal August 2018
One dimensional imager of neutrons on the Z machine journal October 2018
Instability growth seeded by DT density perturbations in ICF capsules journal September 2018
Review of hydro-instability experiments with alternate capsule supports in indirect-drive implosions on the National Ignition Facility journal July 2018
Rayleigh–Taylor instabilities in high-energy density settings on the National Ignition Facility journal June 2018
Indirect drive ignition at the National Ignition Facility journal October 2016
Beyond alpha-heating: driving inertially confined fusion implosions toward a burning-plasma state on the National Ignition Facility journal November 2018
Nuclear diagnostics for Inertial Confinement Fusion (ICF) plasmas journal January 2020
Modeling and projecting implosion performance for the National Ignition Facility journal December 2018
Mix and hydrodynamic instabilities on NIF journal June 2017
Indications of flow near maximum compression in layered deuterium-tritium implosions at the National Ignition Facility journal August 2016
X-ray shadow imprint of hydrodynamic instabilities on the surface of inertial confinement fusion capsules by the fuel fill tube journal March 2017
First Measurements of Fuel-Ablator Interface Instability Growth in Inertial Confinement Fusion Implosions on the National Ignition Facility journal August 2016
Development of the real-time neutron activation diagnostic system for NIF conference September 2017
X-ray penumbral imaging diagnostic developments at the National Ignition Facility
  • Felker, Sean J.; Bachmann, Benjamin; Abu Shawareb, Hatim
  • Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI https://doi.org/10.1117/12.2274611
conference September 2017

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