Counting Statistics

Abstract

The net intensity of emitted characteristic X-radiation from an element in a matrix is related to the concentration of that element. Fig. 5.1 illustrates the theoretical correlation between the peak intensity R _P of an element with its concentration C. The true background response R _b is given by the intercept of the curve on the ordinate. The slope m of the curve, sometimes called

the calibration factor, is equal to $\frac{{{{R}_{p}}-{{R}_{b}}}}{C}$ and the concentration is given by

$$C=\frac{{{{R}_{p}}-{{R}_{b}}}}{m}$$

((5.1))