期刊
X-RAY SPECTROMETRY
卷 38, 期 3, 页码 190-194出版社
JOHN WILEY & SONS LTD
DOI: 10.1002/xrs.1142
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- Engineering and Physical Sciences Research Council [EP/D032210/1] Funding Source: researchfish
- EPSRC [EP/D032210/1] Funding Source: UKRI
A feasibility study was carried out into the use of particle-induced x-ray emission (PIXE) on the ion microprobe for the characterisation of gunshot residues (GSR). We compare these results with the conventional technique, scanning electron microscopy with energy dispersive x-ray spectroscopy (SEM-EDS). Samples of gunshot residue from four different sources were collected. Individual particles of GSR were analysed by SEM-EDS using a 30-keV electron beam focussed to similar to 10 nm, and PIXE using a 2.5-MeV proton beam focussed to similar to 4 mu m. PIXE revealed trace or minor elements undetectable by SEM-EDS, thereby strengthening the discrimination between different types of GSR. Copyright (C) 2009 John Wiley & Sons, Ltd.
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