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 INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 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.

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