Journal Article

PUBDB-2015-01288

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Depth Profiling of Element Concentrations in Stratified Materials by Confocal Microbeam X-ray Fluorescence Spectrometry with Polychromatic Excitation

Wrobel, P. (Corresponding Author)>Extern* ; Wegrzynek, D.>Extern* ; Czyzycki, M.DESY* ; Lankosz, M.>Extern*

2014
American Chemical Society Columbus, Ohio

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Please use a persistent id in citations: doi:10.1021/ac502897g

Abstract: The confocal microbeam X-ray fluorescence technique is a well-established analytical tool that is widely used for qualitative and quantitative analysis of stratified materials. There are several different reconstruction methods dedicated to this type of samples. However, these methods are applicable with monochromatic excitation only. The full description of matrix effects and geometrical effects for polychromatic X-ray photons in confocal geometry is a demanding task. In the present paper, this problem was overcome by the use of effective energy approximation. The reduction of the whole energy dimension into one effective value eliminates the necessity of integration over the primary beam energy range for a number of basic parameters. This simplification is attainable without loss of the accuracy of analysis. The proposed approach was validated by applying it to the reconstruction of element concentration depth profiles of stratified standard samples measured with tabletop confocal microbeam X-ray fluorescence setup and by comparing the obtained results of two independent algorithms.

Note: (c) American Chemical Society. Post referee full text in progress.

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Contributing Institute(s):

1. DOOR-User (DOOR)
2. Experimentebetreuung PETRA III (FS-PE)

Research Program(s):

1. DORIS Beamline L (POF2-54G13) (POF2-54G13)

Experiment(s):

1. DORIS Beamline L (DORIS III)

Appears in the scientific report 2014

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Database coverage:
; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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