کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1885927 1533516 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Uranium trioxide behavior during electron energy loss spectroscopy analysis
ترجمه فارسی عنوان
رفتار تری اکسید اورانیوم در تجزیه طیف سنجی از دست دادن انرژی الکترون
کلمات کلیدی
تری اکسید اورانیوم، کاهش، طیف سنجی از دست دادن انرژی الکترون، میکروسکوپ الکترونی انتقال
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
چکیده انگلیسی


• EEL spectra recorded as a function of UO3 sample thickness.
• The analysis was performed for the P and O edges.
• Reduction of UO3 into U4O9 and/or UO2 readily observed during TEM investigations.
• Reduction of UO3 was confirmed by electron diffraction.

A sample of uranium trioxide (UO3) was produced by focused ion beam (~10 μm×~10 μm×<0.5 μm) for transmission electron and electron energy loss (EEL) spectroscopy examinations in a transmission electron microscope (TEM). The EEL spectra were recorded as a function of the thickness for the P and O edges in the low energy range 0–350 eV and were compared to spectra of UO3 small grains attached to a TEM grid. The EEL spectrum was studied through a range of thicknesses going from ~60 to ~260 nm. The EEL spectra recorded for UO3 are compared with those recorded for UO2. The reduction of UO3 into U4O9 and/or UO2 is readily observed apparently during the TEM investigations and as confirmed by electron diffraction (eD). This redox effect is similar to that known for other redox sensitive oxides. Recommendations are suggested to avoid sample decomposition.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 108, March 2015, Pages 7–12
نویسندگان
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