Experimental considerations of higher order parametric x-rays from silicon crystals of varying thicknesses
Evertson, Scott Richard
Maruyama, Xavier K.
Neighbors, John B.
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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 x-radiation from the <220> and <111> planes of silicon crystals of varying thicknesses were observed. Production of PXR of the order of N=1, and n=2 of the <200> n=1,n=3 and n=4 of the <111> planes of a 44 um and 320 um crystal were observed. Exploiting the formation and attenuation lengths of silicon crystals of various thicknesses, higher order x-radiation production is enhanced relative to the lower energy first order x-ray. Photons of 4.5 to 21 keV have been observed.
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Fiorito, R.B.; Rule, D.W.; Maruyama, X.K.; DiNova, K.L.; Evertson, S.J.; Osborne, M.J.; Snyder, D.; Rietdyk, H.; Piestrup, M.A.; Ho, A.H.; Freitag, R. (1993);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 ...
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