skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Three-dimensional microstructural characterization of bulk plutonium and uranium metals using focused ion beam technique

Journal Article · · Journal of Nuclear Materials
 [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Nuclear forensics requires accurate quantification of discriminating microstructural characteristics of the bulk nuclear material to identify its process history and provenance. Conventional metallographic preparation techniques for bulk plutonium (Pu) and uranium (U) metals are limited to providing information in two-dimension (2D) and do not allow for obtaining depth profile of the material. In this contribution, use of dual-beam focused ion-beam/scanning electron microscopy (FIB-SEM) to investigate the internal microstructure of bulk Pu and U metals is demonstrated. Our results demonstrate that the dual-beam methodology optimally elucidate microstructural features without preparation artifacts, and the three-dimensional (3D) characterization of inner microstructures can reveal salient microstructural features that cannot be observed from conventional metallographic techniques. As a result, examples are shown to demonstrate the benefit of FIB-SEM in improving microstructural characterization of microscopic inclusions, particularly with respect to nuclear forensics.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1324519
Alternate ID(s):
OSTI ID: 1345244
Report Number(s):
LLNL-JRNL-679680
Journal Information:
Journal of Nuclear Materials, Vol. 473, Issue C; ISSN 0022-3115
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (38)

Nuclear Forensic Science: Correlating Measurable Material Parameters to the History of Nuclear Material journal October 2012
Nuclear forensic science—From cradle to maturity journal October 2007
Nuclear forensics—a methodology providing clues on the origin of illicitly trafficked nuclear materials journal January 2005
Nuclear forensic investigations with a focus on plutonium journal October 2007
Age determination of plutonium material in nuclear forensics by thermal ionisation mass spectrometry journal February 2000
Nuclear forensic investigations: Two case studies journal January 2006
Determination of the age of highly enriched uranium journal October 2002
The "age" of plutonium particles journal January 2001
Unveiling the history of seized plutonium through nuclear forensic investigations journal January 2009
Accurate purification age determination of individual uranium–plutonium mixed particles journal July 2015
Age Determination of Highly Enriched Uranium:  Separation and Analysis of 231 Pa journal November 2002
Provenance of unknown plutonium material journal October 2008
Age determination of plutonium using inductively coupled plasma mass spectrometry journal February 2007
Investigation of the oxygen isotopic composition in oxidic uranium compounds as a new property in nuclear forensic science journal October 2001
The isotopic composition of natural uranium samples—Measurements using the new n(233U)/n(236U) double spike IRMM-3636 journal January 2008
Production date determination of uranium-oxide materials by inductively coupled plasma mass spectrometry journal September 2007
Detection of previous neutron irradiation and reprocessing of uranium materials for nuclear forensic purposes journal April 2009
Uranium age determination by measuring the 230Th/234U ratio journal May 2005
A method to determine the time since last purification of weapons grade plutonium journal August 2003
Studies on the age determination of trace plutonium journal June 2009
Application of chemometry for identification of the source of plutonium journal January 2011
Multiple-Instrument Analyses of Single Micron-Size Particles journal July 2005
Modeling of structural and compositional homogenization of plutonium-1 weight percent gallium alloys journal March 2001
Metallographic preparation techniques for uranium journal July 2006
Chemical imaging analysis of environmental particles using the focused ion beam/scanning electron microscopy technique: microanalysis insights into atmospheric chemistry of fly ash journal January 2013
3D microstructural characterization of nickel superalloys via serial-sectioning using a dual beam FIB-SEM journal July 2006
Microstructural tomography of a superalloy using focused ion beam microscopy journal September 2009
Focused ion beam and scanning electron microscopy for 3D materials characterization journal April 2014
Advances in 3D focused ion beam tomography journal April 2014
Three-Dimensional Microstructural Characterization Using Focused Ion Beam Tomography journal May 2007
In situ FIB-SEM characterization and manipulation methods journal April 2014
Applications of focused ion beam microscopy to materials science specimens journal June 1999
Implementation of focused ion beam (FIB) system in characterization of nuclear fuels and materials journal December 2014
Focused Ion Beam Microscopy and Micromachining journal May 2007
Modeling ion-solid interactions for imaging applications journal April 2014
Advantages and disadvantages of using a focused ion beam to prepare TEM samples from irradiated U–10Mo monolithic nuclear fuel journal May 2012
Automated serial sectioning for 3-D analysis of microstructures journal July 2006
Optimization of a FIB/SEM slice-and-view study of the 3D distribution of Ni 4 Ti 3 precipitates in Ni-Ti journal January 2009

Cited By (1)