Microstructural characterization of plutonium oxalate and oxide particles by three-dimensional focused ion beam tomography

Chung, Brandon W.; Torres, Richard A.

doi:10.1016/j.mtla.2019.100294

Title: Microstructural characterization of plutonium oxalate and oxide particles by three-dimensional focused ion beam tomography

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Abstract

Focused ion beam (FIB) tomography was used to characterize three-dimensional (3D) internal microstructures of plutonium oxalate and oxide particles. Sequential two-dimensional (2D) sectioning and imaging using FIB and 3D image reconstruction were used to elucidate and distinguish internal pore microstructure and distribution in plutonium oxide particles calcined from plutonium oxalate precipitates. The results show that the plutonium oxide particles have a significant increase in pore volume fraction while retaining the exterior morphological shape of the corresponding oxalate precipitates. This technique enables the examination of the internal structure of radioactive microparticles for nuclear forensics that is not available with conventional microscopy.

Authors:

Chung, Brandon W. ^[1];

^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Publication Date:: Sat Jun 01 00:00:00 EDT 2019

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1569661

Alternate Identifier(s):: OSTI ID: 1637248

Report Number(s):: LLNL-JRNL-762280
Journal ID: ISSN 2589-1529; 949248; TRN: US2001358

Grant/Contract Number:: AC52-07NA27344

Resource Type:: Accepted Manuscript

Journal Name:: Materialia

Additional Journal Information:: Journal Volume: 6; Journal Issue: C; Journal ID: ISSN 2589-1529

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; plutonium oxalate; plutonium oxide; 3D microscopy; focused ion beam tomography; nuclear forensics

Citation Formats


                    Chung, Brandon W., and Torres, Richard A. Microstructural characterization of plutonium oxalate and oxide particles by three-dimensional focused ion beam tomography.  United States: N. p., 2019. 
Web.  doi:10.1016/j.mtla.2019.100294.

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                    Chung, Brandon W., & Torres, Richard A. Microstructural characterization of plutonium oxalate and oxide particles by three-dimensional focused ion beam tomography.  United States.  https://doi.org/10.1016/j.mtla.2019.100294

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                    Chung, Brandon W., and Torres, Richard A. Sat .  
"Microstructural characterization of plutonium oxalate and oxide particles by three-dimensional focused ion beam tomography".  United States.  https://doi.org/10.1016/j.mtla.2019.100294.  https://www.osti.gov/servlets/purl/1569661.

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@article{osti_1569661,

  title        = {Microstructural characterization of plutonium oxalate and oxide particles by three-dimensional focused ion beam tomography},

  author       = {Chung, Brandon W. and Torres, Richard A.},

  abstractNote = {Focused ion beam (FIB) tomography was used to characterize three-dimensional (3D) internal microstructures of plutonium oxalate and oxide particles. Sequential two-dimensional (2D) sectioning and imaging using FIB and 3D image reconstruction were used to elucidate and distinguish internal pore microstructure and distribution in plutonium oxide particles calcined from plutonium oxalate precipitates. The results show that the plutonium oxide particles have a significant increase in pore volume fraction while retaining the exterior morphological shape of the corresponding oxalate precipitates. This technique enables the examination of the internal structure of radioactive microparticles for nuclear forensics that is not available with conventional microscopy.},

  doi          = {10.1016/j.mtla.2019.100294},

  journal      = {Materialia},

  number       = C,

  volume       = 6,

  place        = {United States},

  year         = {Sat Jun 01 00:00:00 EDT 2019},

  month        = {Sat Jun 01 00:00:00 EDT 2019}

}

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