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Sianoudis, I.; Drakaki, E.; Hein, A. – European Journal of Physics, 2010
It is common to modify valuable, sophisticated equipment, originally acquired for other purposes, to adapt it for the needs of educational experiments, with great didactic effectiveness. The present project concerns a setup developed from components of a portable system for energy dispersive x-ray fluorescence spectroscopy (EDXRF). Two educational…
Descriptors: Science Laboratories, Cultural Background, Radiology, Laboratory Equipment
Mylott, Elliot; Klepetka, Ryan; Dunlap, Justin C.; Widenhorn, Ralf – European Journal of Physics, 2011
In this paper, we present a laboratory activity in computed tomography (CT) primarily composed of a photogate and a rotary motion sensor that can be assembled quickly and partially automates data collection and analysis. We use an enclosure made with a light filter that is largely opaque in the visible spectrum but mostly transparent to the near…
Descriptors: Radiation, Science Laboratories, Lighting, Science Activities
Peralta, Luis; Farinha, Ana Catarina; Rego, Florbela – European Journal of Physics, 2008
X-ray fluorescence is a non-destructive technique that allows elemental composition analysis. In this paper we describe a prescription to obtain the elemental composition of homogeneous coins, like 50 cent Euro coins, and how to get the quantitative proportions of each element with the help of Monte Carlo simulation. Undergraduate students can…
Descriptors: Undergraduate Students, Monte Carlo Methods, Chemistry, Science Laboratories
Honnicke, M. G.; Gavinho, L.; Cusatis, C. – European Journal of Physics, 2008
Compton scattering and diffuse scattering degenerate the contrast in radiographic images. To avoid such scattering effects, a grid, between the patient and the film is currently used to improve the image quality. Teaching this topic to medical physics students requires demonstration experiments. In this paper, an optical analog to an x-ray…
Descriptors: Radiology, Structural Elements (Construction), Photography, Physics
Foadi, J.; Evans, G. – European Journal of Physics, 2008
The reciprocal lattice is derived through the Fourier transform of a generic crystal lattice, as done previously in the literature. A few key derivations are this time handled in detail, and the connection with x-ray diffraction is clearly pointed out. The Ewald sphere is subsequently thoroughly explained and a few comments on its representation…
Descriptors: Undergraduate Students, Graduate Students, Textbooks, Physical Sciences