کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1876142 1041983 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Implementation of the elemental library stratified sampling technique on the GUI-based Monte Carlo library least squares (MCLLS) approach for EDXRF analysis
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
پیش نمایش صفحه اول مقاله
Implementation of the elemental library stratified sampling technique on the GUI-based Monte Carlo library least squares (MCLLS) approach for EDXRF analysis
چکیده انگلیسی

The Monte Carlo-based Energy Dispersive X-ray Fluorescence (MCXRF) elemental analyzer approach can be used to accurately calculate elemental weight fractions in rock formations or metal alloys, by least-squares regression of the measured X-ray spectrum with computer-generated elemental library spectra. The analog sampling scheme in a Monte Carlo simulation cannot generate satisfactory results for trace elements due to their low sampling probability. A stratified sampling variance-reduction technique is proposed and implemented to enable each element in the measured sample to have equal opportunity of being sampled with adjusted weights. Essentially, all computed elemental libraries have good statistical precision and improve the accuracy of the elemental analysis results.


► Monte Carlo based XRF analyzer is accurate compared to fundamental parameters.
► Elemental stratified sampling enhances the quality of all elemental libraries.
► GUI-based software package was easy to use for interactive elemental analysis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 70, Issue 7, July 2012, Pages 1243–1249
نویسندگان
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