Overview
Program CALCZAF.EXE is another small applet for "stand-alone" calculation of ZAF and Phi-Rho-Z matrix correction parameters. CalcZAF can accept composition to calculate intensities (k-ratios) or calculate composition from intensities using normalized k-ratios, raw k-ratios or unknown and standard counts. K-ratios or counts measured on compound standards may be utilized, the software will load standard compositions from the Standard composition database.
CalcZAF can also calculate large amounts of binary composition data and create data suitable for plotting error histograms. In addition CalcZAF can apply geometric corrections to intensities for particles (cubes, prisms, spheres and fibers) and thin films (only for those films or foils less than 1 microgram/centimeter^2 or assuming density = 1 approximately 0.01 um or 100 nm or 1000 angstroms) based on various adjustable parameters. Note that the accuracy of the particle method depends on bracketing a single particle in the scanned or defocused beam (overscanning) and applying judgement as to the particle shape and the distance along the beam axis. Note that the scan or defocus size must be equal to the particle dimension.
Finally CalcZAF has very powerful tools for calculating detection limits (concentration at given integration time or integration time given concentration) and also for calculating x-ray and electron distances in elements and compounds.
Note that Probe for EPMA can export a CalcZAF compatible input file of standard or unknown sample intensities or raw k-ratios for processing in CalcZAF. See the File | Open menu description.