Aj. Antolak et al., ENHANCEMENTS IN THE LIVERMORE SPECTRUM ANALYSIS PACKAGE PIXEF, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 99(1-4), 1995, pp. 406-409
A number of enhancements have been incorporated into the Livermore par
ticle-induced X-ray emission (PIXE) spectral fitting program PIXEF (fo
r PIXE-FIT) in order to improve our quantitative analysis capability f
or data collected with Si(Li) detectors. Some of the new features incl
ude an improved description for the background which takes into accoun
t X-ray absorption effects, a better representation of the line shapes
using Voigtian distributions, and a better treatment of peak fitting
in regions of poor counting statistics. The implementation of these im
provements into PIXEF is described.