Fast neutron (14.5 MeV) radiography: a comparative study

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Fast neutron (14.5 MeV) radiography is a type of non-destructive analysis tool that offers its own benefits and drawbacks. Because cross-sections vary with energy, a different range of materials can be examined with fast neutrons than can be studied with thermal neutrons, epithermal neutrons, or x-rays. This paper details these differences through a comparative study of fast neutron radiography to the other types of radiography available. The most obvious difference among the different types of radiography is in the penetrability of the sources. Fast neutrons can probe much deeper and can therefore obtain details of the internals of thick objects. ... continued below

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17 p.

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Klann, R.T. July 1, 1996.

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  • Argonne National Laboratory
    Publisher Info: Argonne National Lab., Idaho Falls, ID (United States)
    Place of Publication: Idaho Falls, Idaho

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Fast neutron (14.5 MeV) radiography is a type of non-destructive analysis tool that offers its own benefits and drawbacks. Because cross-sections vary with energy, a different range of materials can be examined with fast neutrons than can be studied with thermal neutrons, epithermal neutrons, or x-rays. This paper details these differences through a comparative study of fast neutron radiography to the other types of radiography available. The most obvious difference among the different types of radiography is in the penetrability of the sources. Fast neutrons can probe much deeper and can therefore obtain details of the internals of thick objects. Good images have been obtained through as much as 15 cm of steel, 10 cm of water, and 15 cm of borated polyethylene. In addition, some objects were identifiable through as much as 25 cm of water or 30 cm of borated polyethylene. The most notable benefit of fast neutron radiography is in the types of materials that can be tested. Fast neutron radiography can view through materials that simply cannot be viewed by X rays, thermal neutrons, or epithermal neutrons due to the high cross-sections or linear attenuation coefficients involved. Cadmium was totally transparent to the fast neutron source. Fast neutron radiography is not without drawbacks. The most pronounced drawback has been in the quality of radiograph produced. The image resolution is only about 0.8 mm for a 1.25 cm thick object, whereas, other forms of radiography have much better resolution.

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17 p.

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INIS; OSTI as DE96012762

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  • 5. world conference on neutron radiography, Berlin (Germany), 17-20 Jun 1996

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  • Other: DE96012762
  • Report No.: ANL/ED/CP--88443
  • Report No.: CONF-9606223--3
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 273767
  • Archival Resource Key: ark:/67531/metadc665722

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  • July 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Jan. 6, 2016, 4:53 p.m.

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Klann, R.T. Fast neutron (14.5 MeV) radiography: a comparative study, article, July 1, 1996; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc665722/: accessed April 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.