Elemental mapping using proton-induced x-rays

Autor: J. P. Slabbert, C.A. Pineda, Robert Frei, J. Padayachee, C.L. Churms, Wojciech J. Przybyłowicz, Wolf Uwe Reimold, V.M Prozesky, Chris Ryan, Jolanta Mesjasz-Przybyłowicz
Rok vydání: 2001
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Zdroj: ResearcherID
University of Copenhagen
ISSN: 1097-4539
0049-8246
DOI: 10.1002/xrs.474
Popis: The use of particle-induced X-ray emission (PIXE) in conjunction with a scanning nuclear microprobe (SNM) offers one of the few microanalytical techniques capable of studies of elemental concentrations at the ppm level, with a spatial resolution of the order of 1 μm. Beam scanning capabilities and advanced data treatment make it a technique of choice for quantitative two-dimensional studies of elemental distribution. Although the ultimate aim is to obtain true quantitative elemental maps, free of concentration or thickness artifacts, some compromises are necessary owing to experimental and computational restrictions. Some approaches currently used are discussed with emphasis on true elemental imaging using the dynamic analysis method. Examples of applications in geology and biology are shown to illustrate its benefits and limitations.
Databáze: OpenAIRE
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