Application of linear least squares to the analysis of Auger electron spectroscopy depth profiles of plutonium oxides [Application of linear least squares to the analysis of AES depth profiles of plutonium oxides]

Journal Article · Thu Mar 29 00:00:00 EDT 2018 · Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films

DOI:https://doi.org/10.1116/1.5021587· OSTI ID:1468913

Donald, Scott B. ^[1]; Stanford, Jeff A. ^[1]; McLean, William ^[1]; Nelson, Art J. ^[1]

---

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

In this paper, the application of the linear least squares (LLS) methodology allows for quantitative determination of variation in material composition with depth. LLS fits were applied to decompose and enhance the interpretation of spectra obtained by Auger electron spectroscopy during depth profiles of oxidized plutonium surfaces. By means of the LLS algorithm, chemical state assignments of the Pu P₁VV/O₄₅VV, O KLL, and C KLL Auger transitions were determined and the existence of a subsurface oxycarbide layer was identified, with confirmation of the oxide and metal components provided from comparison to previous measurements of standard samples.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC52-07NA27344
• OSTI ID: 1468913
• Alternate ID(s): OSTI ID: 1430382
• Report Number(s): LLNL-JRNL-744017; 898807
• Journal Information: Journal of Vacuum Science and Technology. A, Vacuum, Surfaces and Films, Vol. 36, Issue 3; ISSN 0734-2101
• Publisher: American Vacuum Society
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE