Article ID Journal Published Year Pages File Type
1876142 Applied Radiation and Isotopes 2012 7 Pages PDF
Abstract

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.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Radiation
Authors
, ,