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Title: High-adiabat high-foot, low-mix cryogenic DT layered capsule implosion experiments on the National Ignition Facility

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1134431
Report Number(s):
LLNL-JRNL-644784
DOE Contract Number:
DE-AC52-07NA27344
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters, vol. 112, no. 5, February 7, 2014, pp. 055001-1 to 5
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION

Citation Formats

Park, H S, Hurricane, O A, Callahan, D A, Casey, D T, Dewald, E L, Dittrich, T R, Doppner, T, Hinkel, D E, Berzak Hopkins, L F, Pape, S L, Ma, T, Patel, P K, Remington, B A, Robey, H F, Salmonson, J, and Kline, J L. High-adiabat high-foot, low-mix cryogenic DT layered capsule implosion experiments on the National Ignition Facility. United States: N. p., 2013. Web.
Park, H S, Hurricane, O A, Callahan, D A, Casey, D T, Dewald, E L, Dittrich, T R, Doppner, T, Hinkel, D E, Berzak Hopkins, L F, Pape, S L, Ma, T, Patel, P K, Remington, B A, Robey, H F, Salmonson, J, & Kline, J L. High-adiabat high-foot, low-mix cryogenic DT layered capsule implosion experiments on the National Ignition Facility. United States.
Park, H S, Hurricane, O A, Callahan, D A, Casey, D T, Dewald, E L, Dittrich, T R, Doppner, T, Hinkel, D E, Berzak Hopkins, L F, Pape, S L, Ma, T, Patel, P K, Remington, B A, Robey, H F, Salmonson, J, and Kline, J L. Tue . "High-adiabat high-foot, low-mix cryogenic DT layered capsule implosion experiments on the National Ignition Facility". United States. doi:. https://www.osti.gov/servlets/purl/1134431.
@article{osti_1134431,
title = {High-adiabat high-foot, low-mix cryogenic DT layered capsule implosion experiments on the National Ignition Facility},
author = {Park, H S and Hurricane, O A and Callahan, D A and Casey, D T and Dewald, E L and Dittrich, T R and Doppner, T and Hinkel, D E and Berzak Hopkins, L F and Pape, S L and Ma, T and Patel, P K and Remington, B A and Robey, H F and Salmonson, J and Kline, J L},
abstractNote = {},
doi = {},
journal = {Physical Review Letters, vol. 112, no. 5, February 7, 2014, pp. 055001-1 to 5},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 08 00:00:00 EDT 2013},
month = {Tue Oct 08 00:00:00 EDT 2013}
}
  • Cited by 7
  • In order to achieve the several hundred Gbar stagnation pressures necessary for inertial confinement fusion ignition, implosion experiments on the National Ignition Facility (NIF) [E. I. Moses et al., Phys. Plasmas 16, 041006 (2009)] require the compression of deuterium-tritium fuel layers by a convergence ratio as high as forty. Such high convergence implosions are subject to degradation by a range of perturbations, including the growth of small-scale defects due to hydrodynamic instabilities, as well as longer scale modulations due to radiation flux asymmetries in the enclosing hohlraum. Due to the broad range of scales involved, and also the genuinely three-dimensionalmore » (3D) character of the flow, accurately modeling NIF implosions remains at the edge of current simulation capabilities. This paper describes the current state of progress of 3D capsule-only simulations of NIF implosions aimed at accurately describing the performance of specific NIF experiments. Current simulations include the effects of hohlraum radiation asymmetries, capsule surface defects, the capsule support tent and fill tube, and use a grid resolution shown to be converged in companion two-dimensional simulations. The results of detailed simulations of low foot implosions from the National Ignition Campaign are contrasted against results for more recent high foot implosions. While the simulations suggest that low foot performance was dominated by ablation front instability growth, especially the defect seeded by the capsule support tent, high foot implosions appear to be dominated by hohlraum flux asymmetries, although the support tent still plays a significant role. For both implosion types, the simulations show reasonable, though not perfect, agreement with the data and suggest that a reliable predictive capability is developing to guide future implosions toward ignition.« less
  • Cited by 37