Resonant Diffraction Radiation and Smith-Purcell Effect

An approach has been developed where the Smith-Purcell radiation (SPR), i.e. emission of electrons moving close to a periodic structure, is treated as the resonant diffraction radiation. Simple formulas have been designed for the SPR intensity for a grating having perfectly conducting strips spaced by a vacuum gap. The results have been compared with those obtained via other techniques. It has been shown that the intensity of radiation for the said gratings for a relativistic case sufficiently exceeds the SPR intensity for the grating made up by a periodically deformed continuous surface.Comment: 9 pages, LATEX, 3 Postscript figures, uses epsf.sty, submitted to Phys.Letters

Angular distribution of X-ray radiation by 500 MeV electrons in a tungsten crystal

X-rays generated by a 500 MeV electron beam of the Tomsk synchrotron in a tungsten single crystal with a mosaic factor less than 80'' has been studied theoretically and experimentallyyesBelgorod State Universit

Angular distribution of X-ray radiation by 500 MeV electrons in an tungsten

Abstract X-rays generated by a 500 MeV electron beam of the Tomsk synchrotron in a tungsten single crystal with a mosaic factor less than 80 00 has been studied theoretically and experimentally. The tungsten crystal was a block with sizes 1:7 Â 10 Â 15 mm 3 aligned with the (1 1 1) plane at the Bragg angle h B % 45°to the electron beam axis. The emitted photons were detected at an angle of 2h B with respect to the electron beam. The emitted angular distributions for the (2 2 2) and (4 4 4) orders have been measured and compared with predictions of the developed theoretical model. This model takes the contribution of parametric X-radiation (PXR) and diffracted transition radiation (DTR) generated by relativistic electrons from in-surface of a crystalline target as well as an influence of an interference between PXR and DTR emission mechanisms into account. The obtained results show the important contribution of DTR to the measured emission yield

Angular distribution of X-ray radiation by 500 MeV electrons in a tungsten crystal

yesX-rays generated by a 500 MeV electron beam of the Tomsk synchrotron in a tungsten single crystal with a mosaic factor less than 80'' has been studied theoretically and experimentallyBelgorod State Universit