Standardization of spectral lines.

摘要

A method and apparatus for standardizing spectral line intensities in a spectral monochromator that separates an input beam into a sample spectral line characteristic of a sample element, a reference spectral line, a standard spectral line and a background spectral band. At a first point in time an intensity IA of the sample line, a first intensity IR1 of the reference line and a first intensity IB1 of the background band are measured. At a second point in time an intensity IS of the standard line, a second intensity IR2 of the reference line and a second intensity IB2 of the background band are measured. An intensity ratio IR defined by the formula <MATH> is computed wherein the intensity ratio IR represents a standardized intensity of the sample line compensated for source fluctuations.