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Investigation of an iterative matrix method for the inversion of ARXPS data
Author(s) -
Paynter R. W.,
Peykov D.
Publication year - 2016
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5881
Subject(s) - sharpening , inversion (geology) , iterative method , matrix (chemical analysis) , noise (video) , algorithm , computer science , chemistry , mineralogy , materials science , analytical chemistry (journal) , geology , chromatography , artificial intelligence , image (mathematics) , paleontology , structural basin
Mathematical simulations were used to evaluate an iterative, regularized matrix approach to the recovery of composition depth profiles from ARXPS data containing 1, 3, 5, 7 or 9% noise. The iterative inversion was intended to remove unphysical negative concentration values from the depth profile and to provide some degree of profile sharpening at layer interfaces. It was found that while this procedure worked effectively on data containing just 1% noise, its efficacy diminished as the level of noise increased. Copyright © 2015 John Wiley & Sons, Ltd.