Measurement of Cu-Doped Be Gradient Steps in Sputtered Be Capsules

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The purpose of this memo is to lay the groundwork for non-destructively determining the position and ultimately the concentration of Cu gradient steps in sputtered Be capsules (or Ge steps in CH capsules) by ''simple'' radiography. A second personal objective was for me to learn something about radiography, and for that reason this memo may be more detailed than necessary. Steve Haan has suggested a design for Be capsules that makes use of a gradient of Cu-doping in a sputtered Be shell. The capsule for a 300 eV design is shown in Figure 1. The question that this memo wants ... continued below

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Cook, B March 26, 2004.

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Description

The purpose of this memo is to lay the groundwork for non-destructively determining the position and ultimately the concentration of Cu gradient steps in sputtered Be capsules (or Ge steps in CH capsules) by ''simple'' radiography. A second personal objective was for me to learn something about radiography, and for that reason this memo may be more detailed than necessary. Steve Haan has suggested a design for Be capsules that makes use of a gradient of Cu-doping in a sputtered Be shell. The capsule for a 300 eV design is shown in Figure 1. The question that this memo wants to address is whether the copper concentration boundaries (and ultimately the concentration itself) can be seen and measured with our radiography system. I will focus only on the relative opacities, and not get into the practicalities of film reading, lateral resolution and the like. I will assume a monochromatic 8 keV source; clearly there are other sources and filters that can be used, as well as the fact that the source is not monochromatic. So given all these approximations lets proceed.

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PDF-file: 9 pages; size: 0.4 Mbytes

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  • Report No.: UCRL-TR-203445
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/892788 | External Link
  • Office of Scientific & Technical Information Report Number: 892788
  • Archival Resource Key: ark:/67531/metadc884146

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Office of Scientific & Technical Information Technical Reports

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  • March 26, 2004

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 29, 2016, 7:33 p.m.

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Cook, B. Measurement of Cu-Doped Be Gradient Steps in Sputtered Be Capsules, report, March 26, 2004; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc884146/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.