Specimen Heterogeneity Analysis; A Primer (PREPRINT)
Abstract
The characterization and the quantification of specimen heterogeneity is an issue that is intimately related to the precision, or variability, of the x-ray measurements that are made on a specimen. While the precision of electron probe micro-analysis (EPMA) techniques has been studied thoroughly over the past 55 years, it is less often discussed in relation to the topic of specimen heterogeneity. For the beginning analyst, the relationship between the statistical interpretation of the data and the application of the various heterogeneity equations can be confusing. The NIST-Analysis of Variance (ANOVA) procedure provides a rigorous method for evaluating heterogeneity within research materials; however, a quick estimate of the heterogeneity range is often all that is required for a single specimen that is not intended to be used as a standard reference material. For these instances, legacy equations, such as the one proposed by Goldstein, et al, have been suggested because they are quick and easy to apply.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 2008
- Accession Number
- ADA501129
Entities
People
- F. Meisenkothen
- J. J. Donovan
Organizations
- Universal Energy Systems