Skip to main content

NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Embracing Uncertainty: Modeling Uncertainty in EPMA - Part II

Published

Author(s)

Nicholas Ritchie

Abstract

This, the second in a series of articles present a new framework for considering the computation of uncertainty in electron excited X-ray microanalysis measurements, will discuss matrix correction. The framework presented in the first article will be applied to the matrix correction model called ''Pouchou and Pichoir's Simplified Model'' or simply ''XPP''. This uncertainty calculation will consider the influence of beam energy, take-off angle, mass- absorption coefficient, surface roughness and other parameters. Since uncertainty calculations and measurement optimization are so intimately related, it also provides a starting point for optimizing accuracy through choice of measurement design.
Citation
Microscopy and Microanalysis

Keywords

matrix correction, uncertainty, microanalysis, electron probe microanalysis, energy dispersive x-ray spectrometry, wavelength dispersive x-ray spectrometry

Citation

Ritchie, N. (2001), Embracing Uncertainty: Modeling Uncertainty in EPMA - Part II, Microscopy and Microanalysis, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=930079 (Accessed October 10, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created January 1, 2001, Updated August 26, 2022
Was this page helpful?