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

Abstract

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.

Authors:
 [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. General Atomics, San Diego, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1424106
Report Number(s):
LLNL-JRNL-736356
Journal ID: ISSN 1536-1055; TRN: US1801904
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Fusion Science and Technology
Additional Journal Information:
Journal Volume: 73; Journal Issue: 2; Journal ID: ISSN 1536-1055
Publisher:
American Nuclear Society
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; National Ignition Facility; inertial confinement fusion; hohlraums

Citation Formats

Bhandarkar, Suhas, Baumann, Ted, Alfonso, Noel, Thomas, Cliff, Baker, Kevin, Moore, Alastair, Larson, Cindy, Bennett, Don, Sain, John, and Nikroo, Abbas. Fabrication of Low-Density Foam Liners in Hohlraums for NIF Targets. United States: N. p., 2018. Web. doi:10.1080/15361055.2017.1406248.
Bhandarkar, Suhas, Baumann, Ted, Alfonso, Noel, Thomas, Cliff, Baker, Kevin, Moore, Alastair, Larson, Cindy, Bennett, Don, Sain, John, & Nikroo, Abbas. Fabrication of Low-Density Foam Liners in Hohlraums for NIF Targets. United States. doi:10.1080/15361055.2017.1406248.
Bhandarkar, Suhas, Baumann, Ted, Alfonso, Noel, Thomas, Cliff, Baker, Kevin, Moore, Alastair, Larson, Cindy, Bennett, Don, Sain, John, and Nikroo, Abbas. Mon . "Fabrication of Low-Density Foam Liners in Hohlraums for NIF Targets". United States. doi:10.1080/15361055.2017.1406248. https://www.osti.gov/servlets/purl/1424106.
@article{osti_1424106,
title = {Fabrication of Low-Density Foam Liners in Hohlraums for NIF Targets},
author = {Bhandarkar, Suhas and Baumann, Ted and Alfonso, Noel and Thomas, Cliff and Baker, Kevin and Moore, Alastair and Larson, Cindy and Bennett, Don and Sain, John and Nikroo, Abbas},
abstractNote = {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.},
doi = {10.1080/15361055.2017.1406248},
journal = {Fusion Science and Technology},
number = 2,
volume = 73,
place = {United States},
year = {2018},
month = {1}
}

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