A near one-dimensional indirectly driven implosion at convergence ratio 30

MacLaren, S. A.; Masse, L. P.; Czajka, C. E.; Khan, S. F.; Kyrala, G. A.; Ma, T.; Ralph, J. E.; Salmonson, J. D.; Bachmann, B.; Benedetti, L. R.; Bhandarkar, S. D.; Bradley, P. A.; Hatarik, R.; Herrmann, H. W.; Mariscal, D. A.; Millot, M.; Patel, P. K.; Pino, J. E.; Ratledge, M.; Rice, N. G.; Tipton, R. E.; Tommasini, R.; Yeamans, C. B.

doi:10.1063/1.5017976

Title: A near one-dimensional indirectly driven implosion at convergence ratio 30

Journal Article · Wed Apr 18 00:00:00 EDT 2018 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5017976· OSTI ID:1566011

MacLaren, S. A. ^[1];

^[1]; Czajka, C. E. ^[1]; Khan, S. F. ^[1];

^[2]; Ma, T. ^[1]; Ralph, J. E. ^[1]; Salmonson, J. D. ^[1]; Bachmann, B. ^[1];

^[1]; Bhandarkar, S. D. ^[1];

^[2]; Hatarik, R. ^[1]; Herrmann, H. W. ^[2]; Mariscal, D. A. ^[1];

^[1]; Patel, P. K. ^[1]; Pino, J. E. ^[1]; Ratledge, M. ^[3]; Rice, N. G. ^[3] more »

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
General Atomics, La Jolla, CA (United States)

Inertial confinement fusion cryogenic-layered implosions at the National Ignition Facility, while successfully demonstrating self-heating due to alpha-particle deposition, have fallen short of the performance predicted by one-dimensional (1D) multi-physics implosion simulations. The current understanding, from experimental evidence as well as simulations, suggests that engineering features such as the capsule tent and fill tube, as well as time-dependent low-mode asymmetry, are to blame for the lack of agreement. A short series of experiments designed specifically to avoid these degradations to the implosion are described here in order to understand if, once they are removed, a high-convergence cryogenic-layered deuterium-tritium implosion can achieve the 1D simulated performance. The result is a cryogenic layered implosion, round at stagnation, that matches closely the performance predicted by 1D simulations. This agreement can then be exploited to examine the sensitivity of approximations in the model to the constraints imposed by the data.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1566011

Alternate ID(s):: OSTI ID: 1433564

Report Number(s):: LLNL-JRNL-742393; 897058; TRN: US2000956

Journal Information:: Physics of Plasmas, Vol. 25, Issue 5; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 17 works

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Robustness to hydrodynamic instabilities in indirectly driven layered capsule implosions Haines, Brian M.; Olson, R. E.; Sweet, W. Physics of Plasmas, Vol. 26, Issue 1 https://doi.org/10.1063/1.5080262	journal	January 2019
A simulation-based model for understanding the time dependent x-ray drive asymmetries and error bars in indirectly driven implosions on the National Ignition Facility Masse, L.; Clark, D.; MacLaren, S. Physics of Plasmas, Vol. 26, Issue 6 https://doi.org/10.1063/1.5092827	journal	June 2019

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