Sample-specific Reference Spectra Library

摘要

A method and apparatus are provided for identifying a material with a sample-specific reference spectral list or library. A sequential approach to SEM-EDS automated mineralogy classification is carried out by performing two or more material classification analyses. A pre-classification step restricts the processing of spectra deconvolution algorithms to a subset of spectra that pass a dominant mineral criteria resulting in a significantly reduced subset of reference spectra that occur within the measured sample in pure enough form at a given minimum quantity. The following complex classification stages involving deconvolution of multiple constituents within measured spectra is based on this sample relevant subset.

主权项

1. A method of identifying materials in a sample, comprising the steps of:
collecting from multiple points on the sample measurement data providing information from which the composition of the sample at the multiple points can be determined; analyzing the measurement data to identify materials present in a pure phase at any of the multiple points in the sample; forming a sample-specific reference library containing materials identified as present in a pure phase at any of the multiple points in the sample; and analyzing the measurement data using the sample-specific library to determine the composition of the multiple points on the sample.