Detection of pulsed, bremsstrahlung-induced, prompt neutron capture gamma-rays with HPGe detector

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The Idaho National Engineering Laboratory (INEL) is developing a novel photoneutron-based nondestructive evaluation technique which uses a pulsed, high-energy (up to 8-MeV) electron accelerator and gamma-ray spectrometry. Highly penetrating pulses of bremsstrahlung photons are produced by each pulse of electrons. Interrogating neutrons are generated by the bremsstrahlung photons interacting within a photoneutron source material. The interactions of the neutrons within a target result in the emission of elemental characteristic gamma-rays. Spectrometry is performed by analyzing the photoneutron-induced prompt gamma-rays acquired between accelerator pulses with a unique, high-purity germanium (HPGe) gamma-ray detection system using a modified transistor reset preamplifier. The detection ... continued below

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5 p.

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Jones, J.L. August 1, 1996.

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Description

The Idaho National Engineering Laboratory (INEL) is developing a novel photoneutron-based nondestructive evaluation technique which uses a pulsed, high-energy (up to 8-MeV) electron accelerator and gamma-ray spectrometry. Highly penetrating pulses of bremsstrahlung photons are produced by each pulse of electrons. Interrogating neutrons are generated by the bremsstrahlung photons interacting within a photoneutron source material. The interactions of the neutrons within a target result in the emission of elemental characteristic gamma-rays. Spectrometry is performed by analyzing the photoneutron-induced prompt gamma-rays acquired between accelerator pulses with a unique, high-purity germanium (HPGe) gamma-ray detection system using a modified transistor reset preamplifier. The detection system, the experimental configuration, and the accelerator operation used to characterize the detection system performance are described. Using a 6.5 MeV electron accelerator and a beryllium metal photoneutron source, gamma-ray spectra were successfully acquired for Al, Cu, polyethylene, NaC1, and depleted uranium targets as soon as 30 {mu}s after each bremsstrahlung (or x-ray) flash.

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5 p.

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INIS; OSTI as DE96014113

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  • 5. international conference on applications of nuclear techniques: neutrons in research and industry, Crete (Greece), 9-15 Jun 1996

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  • Other: DE96014113
  • Report No.: INEL--95/00590
  • Report No.: CONF-960690--9
  • Office of Scientific & Technical Information Report Number: 367238
  • Archival Resource Key: ark:/67531/metadc680308

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Office of Scientific & Technical Information Technical Reports

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  • August 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • April 25, 2016, 11:37 a.m.

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Jones, J.L. Detection of pulsed, bremsstrahlung-induced, prompt neutron capture gamma-rays with HPGe detector, article, August 1, 1996; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc680308/: accessed November 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.