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Simulation of multispectral x-ray imaging scenarios by Wien shift optical spectroscopy

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Author

Summary, in English

The acquisition of multispectral x-ray images and the treatment of such data are essential for understanding many devices that we encounter in everyday life. Examples include computerized tomography in hospitals and scanners at airports. X-ray devices remain impractical for undergraduate laboratories because of their considerable cost and the risk of exposure to ionizing radiation. One way to acquire spectral information and thus constituent-discriminating data in x-ray imaging is to alter the spectral contents of the illuminating x-ray source, which can be achieved by changing the x-ray tube voltage and thus energetically displacing the bremsstrahlung. A similar effect occurs in the emission from a black-body radiator in the optical and infrared regions when altering the temperature. We illustrate how to simulate the x-ray scenario with a webcam and an ordinary light bulb. Insight into how chemical and physical information regarding objects can be obtained in multispectral imaging supported by multivariate analysis is gained.

Department/s

Publishing year

2010

Language

English

Pages

170-175

Publication/Series

American Journal of Physics

Volume

78

Issue

2

Document type

Journal article

Publisher

American Association of Physics Teachers

Topic

  • Atom and Molecular Physics and Optics

Keywords

  • physics education
  • Wien effect
  • X-ray spectra
  • X-ray imaging
  • computerised tomography
  • laboratories
  • SoTL

Status

Published

ISBN/ISSN/Other

  • ISSN: 0002-9505