Di Domenico, G. and Cardarelli, P. and Comandini, A. and Gambaccini, M. and Marziani, M. and Taibi, A. (2011) A model of parametric X-ray radiation for application to diagnostic radiology. Il nuovo cimento C, 34 (4). pp. 207-212. ISSN 1826-9885
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Abstract
Parametric X-ray Radiation (PXR) is well known as an intense, tunable and quasi-monochromatic X-ray source. From the very first work of Ter-Mikaelian, who proposed the interaction phenomenon for Parametric X-rays many theoretical and experimental studies have investigated the characteristics of such a novel X-ray source. Within the framework of classical electrodynamics, we have thoroughly studied the physical implications of electrons moving through a medium at relativistic speed and then developed an analytical model of X-ray diffraction based on the PXR phenomenon. The model has been used to obtain information on the characteristics of PXR diffracted beam in terms of X-ray intensity, energy spectrum and angular distribution. Several crystals have been studied both in Bragg and Laue geometry and their relative yield has been compared. Preliminary results on the diagnostic potential of PXR have shown that, at a distance from the Crystal which produces a size of the X-ray field useful for an imaging application, the photon yield of PXR is higher than that produced by a conventional X-ray tube, provided that a similar electron current is available.
| Item Type: | Article |
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| Uncontrolled Keywords: | X-ray beams and X-ray optics ; Radiation by moving charges |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 07 Apr 2020 16:28 |
| Last Modified: | 07 Apr 2020 16:28 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17335 |
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