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Title: Single line-of-sight dual energy backlighter for mix width experiments

We present a diagnostic technique used to spatially multiplex two x-ray radiographs of an object onto a detector along a single line-of-sight. This technique uses a thin, <2 μm, cosputtered backlighter target to simultaneously produce both Ni and Zn He{sub α} emission. A Ni picket fence filter, 500 μm wide bars and troughs, is then placed in front of the detector to pass only the Ni He{sub α} emission in the bar region and both energies in the trough region thereby spatially multiplexing the two radiographs on a single image. Initial experimental results testing the backlighter spectrum are presented along with simulated images showing the calculated radiographic images though the nickel picket fence filter which are used to measure the mix width in an accelerated nickel foam.
Authors:
; ; ; ; ; ; ; ;  [1] ; ;  [2] ; ;  [3]
  1. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
  2. AWE, Aldermaston, Reading, Berkshire RG7 4PR (United Kingdom)
  3. Laboratory for Laser Energetics, Rochester, New York 14627 (United States)
Publication Date:
OSTI Identifier:
22303688
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CUSPED GEOMETRIES; EXPERIMENTAL DATA; FOAMS; NICKEL; SPECTRA; SPUTTERING; X-RAY RADIOGRAPHY; ZINC