Preliminary detector design ST862-prototype neutron detector

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Description

The detection of fast neutrons has been accomplished with commercially available liquid scintillators in detectors. Liquid scintillators discriminate fast neutrons from gamma radiation by discarding pulses with short decay constants. However, pulse-timing methods require expensive, bulky equipment and a high degree of technical sophistication in the user. Researchers at Pacific Northwest Laboratory have developed a new class of scintillating material, polymerizing crystals of CaF{sub 2}(Eu) and liquid acrylate monomers with matched indexes of refraction. The new detectors avoid the pulse-timing methods of liquid detectors and allow detectors to be large and relatively light. Fast neutrons can be discriminated from gamma ... continued below

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22 p.

Creation Information

Miller, S. D.; Affinito, J. D. & Sisk, D. R. December 1, 1993.

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  • Pacific Northwest Laboratory
    Publisher Info: Pacific Northwest Lab., Richland, WA (United States)
    Place of Publication: Richland, Washington

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Description

The detection of fast neutrons has been accomplished with commercially available liquid scintillators in detectors. Liquid scintillators discriminate fast neutrons from gamma radiation by discarding pulses with short decay constants. However, pulse-timing methods require expensive, bulky equipment and a high degree of technical sophistication in the user. Researchers at Pacific Northwest Laboratory have developed a new class of scintillating material, polymerizing crystals of CaF{sub 2}(Eu) and liquid acrylate monomers with matched indexes of refraction. The new detectors avoid the pulse-timing methods of liquid detectors and allow detectors to be large and relatively light. Fast neutrons can be discriminated from gamma radiation solely on the basis of pulse height (i.e., energy deposition). Using these detectors, a hand-held neutron detection instrument is proposed that can operate on battery power for 8 to 12 hours and be easily used in field conditions for surveying vehicles and structures.

Physical Description

22 p.

Notes

OSTI as DE94004714; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

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  • Other Information: PBD: Dec 1993

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  • Other: DE94004714
  • Report No.: PNL--8957
  • Grant Number: AC06-76RL01830
  • DOI: 10.2172/10110985 | External Link
  • Office of Scientific & Technical Information Report Number: 10110985
  • Archival Resource Key: ark:/67531/metadc1279982

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  • December 1, 1993

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  • Oct. 12, 2018, 6:44 a.m.

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  • Nov. 15, 2018, 8:21 p.m.

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Miller, S. D.; Affinito, J. D. & Sisk, D. R. Preliminary detector design ST862-prototype neutron detector, report, December 1, 1993; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1279982/: accessed March 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.