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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 has been developed to characterize density variations in ultra-low 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 ΞΌm spatial resolution. The system description, performance and measurement results collected using a 17.8 mg/cc carbon based JX–6 (C 20H 30) aerogel are discussed in this manuscript.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [3] ;  [3] ;  [3] ;  [3] ;  [3] ;  [1] ;  [3] ;  [3]
  1. National Security Technologies, LLC. (NSTec), Mercury, NV (United States)
  2. University of California at Berkeley; University of California at Berkeley
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
DOE/NV/25946-2663; LLNL-JRNL-719698
Journal ID: ISSN 0034-6748
Grant/Contract Number:
AC52-06NA25946; AC52-07NA27344
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:
Nevada Test Site/National Security Technologies, LLC (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; low-density aerogel foams, multi-wavelength, high-contrast contact, radiography system, charge coupled devices, spatial resolution, anodes; 42 ENGINEERING
OSTI Identifier:
1338223
Alternate Identifier(s):
OSTI ID: 1267531; OSTI ID: 1358318