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Alpha heating of indirect-drive layered implosions on the National Ignition Facility.
Baker, K L; MacLaren, S; Jones, O; Spears, B K; Patel, P K; Nora, R; Divol, L; Landen, O L; Anderson, G J; Gaffney, J; Kruse, M; Hurricane, O A; Callahan, D A; Christopherson, A R; Salmonson, J; Hartouni, E P; Döppner, T; Dewald, E; Tommasini, R; Thomas, C A; Weber, C; Clark, D; Casey, D T; Hohenberger, M; Khan, S; Woods, T; Milovich, J L; Berger, R L; Strozzi, D; Kritcher, A; Bachmann, B; Benedetti, R; Bionta, R; Celliers, P M; Fittinghoff, D; Hatarik, R; Izumi, N; Gatu Johnson, M; Kyrala, G; Ma, T; Meaney, K; Millot, M; Nagel, S R; Pak, A; Volegov, P L; Yeamans, C; Wilde, C.
Affiliation
  • Baker KL; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • MacLaren S; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Jones O; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Spears BK; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Patel PK; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Nora R; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Divol L; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Landen OL; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Anderson GJ; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Gaffney J; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Kruse M; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hurricane OA; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Callahan DA; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Christopherson AR; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Salmonson J; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hartouni EP; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Döppner T; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Dewald E; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Tommasini R; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Thomas CA; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
  • Weber C; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Clark D; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Casey DT; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hohenberger M; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Khan S; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Woods T; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Milovich JL; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Berger RL; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Strozzi D; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Kritcher A; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Bachmann B; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Benedetti R; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Bionta R; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Celliers PM; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Fittinghoff D; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hatarik R; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Izumi N; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Gatu Johnson M; Massachusetts Institute of Technology Plasma Science and Fusion Center, Cambridge, Massachusetts 02139, USA.
  • Kyrala G; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Ma T; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Meaney K; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Millot M; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Nagel SR; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Pak A; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Volegov PL; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Yeamans C; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Wilde C; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Phys Rev E ; 107(1-2): 015202, 2023 Jan.
Article in En | MEDLINE | ID: mdl-36797905
ABSTRACT
In order to understand how close current layered implosions in indirect-drive inertial confinement fusion are to ignition, it is necessary to measure the level of alpha heating present. To this end, pairs of experiments were performed that consisted of a low-yield tritium-hydrogen-deuterium (THD) layered implosion and a high-yield deuterium-tritium (DT) layered implosion to validate experimentally current simulation-based methods of determining yield amplification. The THD capsules were designed to reduce simultaneously DT neutron yield (alpha heating) and maintain hydrodynamic similarity with the higher yield DT capsules. The ratio of the yields measured in these experiments then allowed the alpha heating level of the DT layered implosions to be determined. The level of alpha heating inferred is consistent with fits to simulations expressed in terms of experimentally measurable quantities and enables us to infer the level of alpha heating in recent high-performing implosions.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev E Year: 2023 Document type: Article Affiliation country: Estados Unidos
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev E Year: 2023 Document type: Article Affiliation country: Estados Unidos