Higher order parametric X-ray spectra in mosaic graphite and single silicon crystals
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We have observed up to eight orders (n) in the spectra of parametric x-radiation, in the range 5-40 keV, produced by the interaction of a 90 Mev electron beam with mosaic graphite and 90 and 35 Mev beams with single silicon crystals. The measured yields and intensity ratios, I(2)/I(n= I), in graphite are not in agreement with the theory of PXR for mosaic crystals. In comparison, the yield and ratios of intensities in silicon are close to the predictions of PXR theory for perfect crystals. The bandwidths of spectral lines measured in both silicon and graphite are in good agreement with theoretical predictions, and are determined by the angular field of view of the detector.
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Observation of higher order parametric X-ray spectra in mosaic graphite and single silicon crystals Fiorito, R. B.; Rule, D. W.; Maruyama, X. K.; DiNova, K. L.; Everston, S. J.; Osborne, M. J.; Snyder, D.; Rietdyk, H.; Piestrup, M. A.; Ho, A. H. (American Physical Society, 1993-08-02);We have observed up to 8 orders (n) in the spectra of parametric x-radiation (PXR), in the range 5-40 keV, produced by the interaction of a 90 MeV electron beam with mosaic graphite and single silicon crystals. The measured ...
Experimental considerations of higher order parametric x-rays from silicon crystals of varying thicknesses Evertson, Scott Richard (Monterey, California. Naval Postgraduate School, 1992-06);Generation of parametric X-radiation (PXR) may be described as the Bragg scattering of virtual photons to 2dsin0(B), where 0(B) is the angle between the electronic beam and the crystal plane. Enhanced higher order parametric ...
Parametric x-radiation from mosaic graphite: new results and reconciliation of previous experiments Barrows, James E. (Monterey, California. Naval Postgraduate School, 1996-03);This thesis explores the effects of mosaic graphite on the yield of parametric x-radiation (PXR). PXR is the Bragg scattering of virtual photons associated with the Coulombic field of relativistically charged particles ...