Encontrados 3 documentos, a visualizar página 1 de 1
Study of Compton scattering signals in single-sided imaging applications using ...
Tavora, L. M. N.; Gilboy, W. B.Compton scatter imaging (CSI) is well establish one-sided imaging approach, where the image is formed using photons that are singly scattered in a region of the object. However, the measured data includes also photons that are multiply scattered and is also affected by the fact that incoming and outgoing beams are attenuated. In this paper, the EGS4 code system is used to gain some insight into the physics that...
Monte Carlo studies of a novel X-ray tube anode design
Tavora, L. M. N.; Gilboy, W. B.; Morton, E. J.When energetic electrons are incident on high atomic number absorbers, a substantial fraction is back-scattered. This phenomenon is responsible for several undesirable effects in X-ray tubes, in particular a reduction in the X-ray output. The extent of this shortfall has been estimated by using Monte Carlo simulation to start electrons at increasing depth inside the anode, the results indicating that an output ...
Enhancing the ratio of fluorescence to bremsstrahlung radiation in X-ray tube s...
Távora, L. M. N.; Morton, E. J.; Gilboy, W. B.This paper describes techniques that can be used to improve the ratio of fluorescence to bremsstrahlung radiation (F/B) in X-ray tube spectra. Firstly, an extension of the EGS4 code system is used to evaluate the impact of the substrate in thin target applications, in terms of the yield of bremsstrahlung photons produced. The choice of materials to filter X-ray tube spectra, and its effect in the F/B and the tu...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||