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Title: Beryllium capsule implosions at a case-to-capsule ratio of 3.7 on the National Ignition Facility

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.5041285· OSTI ID:1484649
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  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. General Atomics, San Diego, CA (United States)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

Beryllium is a candidate ablator material for indirect-drive inertial confinement fusion experiments, motivated by its high mass ablation rate, which is advantageous for implosion coupling efficiency and stabilization of the ablation-front instability growth. In this paper, we present new data on the shock propagation, in-flight shape, and hot spot self-emission shape from gas-filled capsules that demonstrate the feasibility of predictable, symmetric, controllable beryllium implosions at a case-to-capsule ratio of 3.7. The implosions are round (Legendre mode 2 amplitude ≲5%) at an inner beam power and the energy fraction of 26%–28% of the total, indicating that larger beryllium capsules could be driven symmetrically using the National Ignition Facility.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP) (NA-10; USDOE
Grant/Contract Number:
89233218CNA000001; AC52-06NA52396; AC52-07NA27344; NA0001808
OSTI ID:
1484649
Alternate ID(s):
OSTI ID: 1477816
Report Number(s):
LA-UR-18-24386
Journal Information:
Physics of Plasmas, Vol. 25, Issue 10; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Cited By (8)

Progress toward a self-consistent set of 1D ignition capsule metrics in ICF journal December 2018
Approaching a burning plasma on the NIF journal May 2019
Improved inertial confinement fusion gamma reaction history 12 C gamma-ray signal by direct subtraction journal November 2019
Implosion performance of subscale beryllium capsules on the NIF journal May 2019
Beyond alpha-heating: driving inertially confined fusion implosions toward a burning-plasma state on the National Ignition Facility journal November 2018
Progress of indirect drive inertial confinement fusion in the United States journal July 2019
Burn regimes in the hydrodynamic scaling of perturbed inertial confinement fusion hotspots journal June 2019
Burn regimes in the hydrodynamic scaling of perturbed inertial confinement fusion hotspots text January 2019

Figures / Tables (19)


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