Standardless Quantification Of Actinides By EPMA
نویسندگان
چکیده
منابع مشابه
Quantification Of Actinides By EPMA: a New Accurate Standardless Approach
Electron probe microanalysis (EPMA) is used to quantify with a high accuracy the amount of different elements present on a sample of unknown composition. In the nuclear field, EPMA is largely used to quantify the amount of actinides present in fresh and irradiated fuels. EPMA is also used to manage waste disposal, to analyze sample from severe accidents and to assess the design of next-generati...
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We present methods combining backscattered-electron (BSE) mosaic imaging, quantitative spot-mode electron-probe microanalysis (EPMA), and quantitative compositional mapping by EPMA and micro-xray fluorescence (μXRF) to provide a framework for detailed analysis of terrestrial and lunar samples. BSE imaging provides a base map for the characterization of samples by EPMA. Recent developments in im...
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A novel two dimensional imaging technique of the chemical bonding state was developed by combining the extended X-ray emission fine structure method with an electron probe X-ray microanalyzer mapping technology. With this method, chemical state images of some aluminum standard samples were obtained. It was confirmed that the obtained images provide correct information of chemical states.
متن کاملElectron Probe Microanalysis (EPMA)
An electron microprobe is an electron microscope designed for the non-destructive x-ray microanalysis and imaging of solid materials. It is essentially a hybrid instrument combining the capabilities of both the scanning electron microscope (SEM) and an x-ray fluorescence spectrometer (XRF), with the added features of fine-spot focusing (~ 1 micrometer), optical microscope imaging, and precision...
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Covariance matrix evaluations in the fast energy range were performed for a large number of actinides, either using low-fidelity techniques or more sophisticated methods that rely on both experimental data as well as model calculations. The latter covariance evaluations included in the ENDF/B-VII.1 library are discussed for each actinide separately.
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ژورنال
عنوان ژورنال: Microscopy and Microanalysis
سال: 2015
ISSN: 1431-9276,1435-8115
DOI: 10.1017/s1431927615010867