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X-Ray Imaging

Published online by Cambridge University Press:  06 March 2019

N. Gurker*
Affiliation:
Institut für Technische Physik, Technische Universität Wien (Vienna), Austria
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Extract

Element mapping has been so far an analytical field covered by those investigation methods using a scanned particle beam on the excitation side of the specimen. These methods include localized interaction processes, as in the electron microprobe, secondary ion mass spectrometer and Auger electron spectrometer. On the other hand, methods which use a stationary radiation beam on the input side (non-localized interaction) usually give summarized information about the sample area (X-ray fluorescence spectrometry, photoelectron spectrometry, …). This paper deals with an approach to extending the application field of X-ray fluorescence analysis (XRFA) to element mapping. Fig. 1 shows the main components of the X-ray imaging system. Since modern SRF systems often work under computer control, the only additional hardware components of the system are a scanned sample holder and an X-ray source producing a line-shaped X-ray beam. The computer is usually not used for ease, speed or convenience of operation, but is used to generate the element image and process all the collected fluorescence data.

Type
XRF: Techniques and Instrumentation
Copyright
Copyright © International Centre for Diffraction Data 1979

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References

1. Radon, J., “Berichte uber die Verhandlungen der Koniglich Sachsischen Gesellschaft der Wissenschaften zu Leipzig,” Mathem. Phys. Klasse, 69:262266 (1917).Google Scholar
2. Cormack, A. M., “Representation of a function by its line integrals with some radiological applications,” I, J. Appl. Phys. 34:27222727 (1963); II, J. Appl. Phys. 35:29082913 (1964).Google Scholar
3. Hounsfield, G. N., “Computerized transverse axial scanning (tomography) Part I: Description of the system,” Br. J. Radiol. 46:10161022 (1973).Google Scholar
4. Ramachandran, G. N., Lakshininarayanan, A. V., “Three-dimensional Reconstruction fnrom Radiographs and Electron Micrographs: Applications of Convolutions instead of Fourier Transforms,” Proc. Natl. Acad. USA 68, 9:2236-2240 (1971).Google Scholar
5. Gordon, R., “A Tutorial on ART,” IEEE Trans. Nucl. Sci. 21:7893 (1974).Google Scholar
6. Gurker, H., “Element Mapping by a Scanning X-Ray System,” X-Ray Spectrom., to be published.Google Scholar