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Title: A multi-wavelength, high-contrast contact radiography system for the study of low-density aerogel foams [A multi-wavelength, high-contrast contact radiography system for the study of lowdensity aerogel foams]

A multi wavelength, high contrast contact radiography system has been developed to characterize density variations in ultralow density aerogel foams. These foams are used to generate a ramped pressure drive in materials strength experiments at the National Ignition Facility (NIF) and require precision characterization in order to reduce errors in measurements. The system was used to characterize density variations in carbon and silicon based aerogels to ~10.3% accuracy with ~30 μm spatial resolution. The system description, performance and measurement results collected using a 17.8 mg/cc carbon based JX–6 (C20H30) aerogel are discussed in this paper.
Authors:
ORCiD logo [1] ;  [1] ; ORCiD logo [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [4] ; ORCiD logo [4] ;  [4] ;  [4] ;  [4] ;  [4] ;  [4] ;  [4] ;  [4] ; ORCiD logo [4]
  1. National Security Technologies, LLC. (NSTec), Livermore, CA (United States)
  2. National Security Technologies, LLC, Livermore, California 94550, USA
  3. National Security Technologies, LLC. (NSTec), Livermore, CA (United States); Univ. of California, Berkeley, CA (United States)
  4. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-719698
Journal ID: ISSN 0034-6748; RSINAK
Grant/Contract Number:
AC52-07NA27344; AC52-06NA25946
Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 7; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
OSTI Identifier:
1358318
Alternate Identifier(s):
OSTI ID: 1358318