Journal article
SNIP, a statistics-sensitive background treatment for the quantitative analysis of PIXE spectra in geoscience applications
CG Ryan, E Clayton, WL Griffin, SH Sie, DR Cousens
Nuclear Inst and Methods in Physics Research B | ELSEVIER SCIENCE BV | Published : 1988
Abstract
Statistical fluctuations in X-ray spectra must be treated properly for reliable quantitative PIXE analysis. A background approximation that provides reliable treatment of fluctuations, the Statistics-sensitive Non-linear Iterative Peak-clipping (SNIP) algorithm, is described. Monte Carlo simulation demonstrates the stability of this background approximation, and hence the deduced trace element concentrations, over a wide range of counting statistics. © 1988.