Fabrication of Low-Density Foam Liners in Hohlraums for NIF Targets

Bhandarkar, Suhas; Baumann, Ted; Alfonso, Noel; Thomas, Cliff; Baker, Kevin; Moore, Alastair; Larson, Cindy; Bennett, Don; Sain, John; Nikroo, Abbas

doi:10.1080/15361055.2017.1406248

Fabrication of Low-Density Foam Liners in Hohlraums for NIF Targets

Journal Article · Sun Jan 14 23:00:00 EST 2018 · Fusion Science and Technology

DOI:https://doi.org/10.1080/15361055.2017.1406248· OSTI ID:1424106

Bhandarkar, Suhas ^[1]; Baumann, Ted ^[1]; Alfonso, Noel ^[2]; Thomas, Cliff ^[1]; Baker, Kevin ^[1]; Moore, Alastair ^[1]; Larson, Cindy ^[1]; Bennett, Don ^[1]; Sain, John ^[1]; Nikroo, Abbas ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
General Atomics, San Diego, CA (United States)

Low-density foam liners are seen as a means to mitigate hohlraum wall motion that can interfere with the inner set of beams that are pointed toward the middle section of the hohlraum. These liners need to meet several requirements, most notably the material choice and the maximum allowable solid fraction and thickness, which necessitate development of new processing capabilities. In this paper, we discuss our strategy and work on fabrication of a tantalum oxide foam liner and its assembly into targets for the National Ignition Facility (NIF). Finally, in particular, we discuss our approach to finding solutions to the unique challenges that come up in working with such low-density materials so as to be able establish a viable platform for production of cryogenic targets for NIF with foam-lined hohlraums.

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

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1424106

Report Number(s):: LLNL-JRNL--736356

Journal Information:: Fusion Science and Technology, Journal Name: Fusion Science and Technology Journal Issue: 2 Vol. 73; ISSN 1536-1055

Publisher:: American Nuclear SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Stimulated backscatter of laser light from BigFoot hohlraums on the National Ignition Facility Berger, R. L.; Thomas, C. A.; Baker, K. L. Physics of Plasmas, Vol. 26, Issue 1 https://doi.org/10.1063/1.5079234	journal	January 2019
Approaching a burning plasma on the NIF Hurricane, O. A.; Springer, P. T.; Patel, P. K. Physics of Plasmas, Vol. 26, Issue 5 https://doi.org/10.1063/1.5087256	journal	May 2019
Maintaining low-mode symmetry control with extended pulse shapes for lower-adiabat Bigfoot implosions on the National Ignition Facility Hohenberger, M.; Casey, D. T.; Thomas, C. A. Physics of Plasmas, Vol. 26, Issue 11 https://doi.org/10.1063/1.5121435	journal	November 2019
Progress of indirect drive inertial confinement fusion in the United States Kline, J. L.; Batha, S. H.; Benedetti, L. R. Nuclear Fusion, Vol. 59, Issue 11 https://doi.org/10.1088/1741-4326/ab1ecf	journal	July 2019

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