Prompt Photofission Neutron Detection in Depleted Uranium Article Swipe
Abbas J. Jinia
,
Tessa E. Maurer
,
Christopher A. Meert
,
Oskari Pakari
,
Shaun D. Clarke
,
H. S. Kim
,
David D. Wentzloff
,
Sara A. Pozzi
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1103/physrevapplied.19.054073
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1103/physrevapplied.19.054073
The detection of prompt photofission neutrons during active interrogation is a strong indication of the presence of special nuclear materials. However, the high-energy photons used for interrogation create a very challenging radiation environment for the detection of prompt fission signatures. These challenges include detector saturation and pulse pile-up. Additionally, there is an elevated neutron background that further challenges the detection of prompt fission neutrons. This background is produced because of (γ, Xn) photonuclear reactions in the surrounding high-Z materials. Here, we demonstrate the detection of prompt photofission neutrons in these challenging environments. Depleted uranium (DU) and lead targets are interrogated with bremsstrahlung photons produced by a 9-MV electron linear accelerator. Fast neutrons are detected with trans-stilbene organic detectors, and scintillation pulses are analyzed using a previously developed and demonstrated artificial neural network system. We observe a 5 times higher photoneutron count rate when the lead target is replaced with the DU target. Additionally, we observe a difference in the photoneutron light-output distributions of lead and DU. Here, this difference in the measured distributions is due to the difference in the photoneutron-energy spectra; DU photoneutrons are emitted with (γ, n) and watt-energy spectra, whereas lead photoneutrons are emitted with only the (γ, n) spectrum.
Related Topics
Concepts
Photofission
Physics
Neutron
Nuclear physics
Delayed neutron
Fission
Prompt neutron
Bremsstrahlung
Neutron detection
Photon
Gamma ray
Spectral line
Electron
Optics
Astronomy
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1103/physrevapplied.19.054073
- OA Status
- green
- Cited By
- 2
- References
- 23
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4377826034
All OpenAlex metadata
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- OpenAlex ID
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https://openalex.org/W4377826034Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1103/physrevapplied.19.054073Digital Object Identifier
- Title
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Prompt Photofission Neutron Detection in Depleted UraniumWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-05-23Full publication date if available
- Authors
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Abbas J. Jinia, Tessa E. Maurer, Christopher A. Meert, Oskari Pakari, Shaun D. Clarke, H. S. Kim, David D. Wentzloff, Sara A. PozziList of authors in order
- Landing page
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https://doi.org/10.1103/physrevapplied.19.054073Publisher landing page
- Open access
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YesWhether a free full text is available
- OA status
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greenOpen access status per OpenAlex
- OA URL
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https://www.osti.gov/biblio/1991487Direct OA link when available
- Concepts
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Photofission, Physics, Neutron, Nuclear physics, Delayed neutron, Fission, Prompt neutron, Bremsstrahlung, Neutron detection, Photon, Gamma ray, Spectral line, Electron, Optics, AstronomyTop concepts (fields/topics) attached by OpenAlex
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2Total citation count in OpenAlex
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2025: 1, 2024: 1Per-year citation counts (last 5 years)
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10Other works algorithmically related by OpenAlex
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