Mitigation of X-ray shadow seeding of hydrodynamic instabilities on inertial confinement fusion capsules using a reduced diameter fuel fill-tube

MacPhee, A. G.; Smalyuk, V. A.; Landen, O. L.; Weber, C. R.; Robey, H. F.; Alfonso, E. L.; Biener, J.; Bunn, T.; Crippen, J. W.; Farrell, M.; Felker, S.; Field, J. E.; Hsing, W. W.; Kong, C.; Milovich, J.; Moore, A.; Nikroo, A.; Rice, N.; Stadermann, M.; Wild, C.

doi:10.1063/1.5025183

Mitigation of X-ray shadow seeding of hydrodynamic instabilities on inertial confinement fusion capsules using a reduced diameter fuel fill-tube

Journal Article · Mon May 14 00:00:00 EDT 2018 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5025183· OSTI ID:1718988

^[1]; Smalyuk, V. A. ^[1]; ^[1]; Weber, C. R. ^[1]; Robey, H. F. ^[1]; Alfonso, E. L. ^[2]; Biener, J. ^[1]; Bunn, T. ^[1]; ^[2]; ^[2]; Felker, S. ^[1]; Field, J. E. ^[1]; Hsing, W. W. ^[1]; Kong, C. ^[2]; Milovich, J. ^[1]; Moore, A. ^[1]; ^[1]; Rice, N. ^[2]; Stadermann, M. ^[1]; Wild, C. ^[3]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
General Atomics, San Diego, CA (United States)
Diamond Materials GmbH, Freiburg (Germany)

We report a reduced X-ray shadow imprint of hydrodynamic instabilities on the high-density carbon ablator surface of inertial confinement fusion (ICF) capsules using a reduced diameter fuel fill tube on the National Ignition Facility (NIF). The perturbation seed mass from hydrodynamic instabilities was reduced by approximately an order of magnitude by reducing both the diameter and wall thickness of the fill tube by ~2×, consistent with analytical estimates. Overall, this work demonstrates a successful mitigation strategy for engineered features for ICF implosions on the NIF.

View Accepted Manuscript (DOE)

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

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

Grant/Contract Number:: AC52-07NA27344; NA0001808

OSTI ID:: 1718988

Report Number(s):: LLNL-JRNL-739734; 893576

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

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

Country of Publication:: United States

Language:: English

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