A multi-wirescanner test setup utilizing characteristic X-rays for charged particle and photon beam diagnostics

A multi-wirescanner for diagnostics of ionizing particle beams (e.g. both non-relativistic and ultra-relativistic charged particles; X-ray and gamma photons) is proposed and discussed in the paper. The quasimonochromatic characteristic X-rays and continuous background are clearly identified. The results of measurements of the transverse size, emittance, position and direction of beam propagation are presented and discusse

First observation of parametric X-ray radiation enhancement for grazing incident electrons

The results of first observation of PXR enhancement realizing in the scheme of grazing incidence of emitting electrons onto the surface of crystalline target in conditions of asymmetric diffraction of electron Coulomb field are presentedyesBelgorod State Universit

Studying the interaction of 10 keV electrons with a dielectric surface

The grazing incidence interaction of a 10 keV electron beam with a planar surface of plexiglass is studied experimentally. Moreover, the electron passage through flat channels formed by such surfaces is inves tigated. The experiments reveal the presence of a guiding effect of the electron passage as in the case of a glass surfac

Modeling of guiding of 10 keV electron beam by planar dielectric surface

Study of 10 keV electron beam reflection from a single planar dielectric surface was made. Guiding effect for some part of the beam was observed within grazing angles of incidence. Ionization, electron emission and drain of the surface charge were considered in the computer model to explain the result

Transition radiation of fast electrons as a broadband vacuum-ultraviolet radiation source

The characteristics of a possible radiation source in the vacuum ultraviolet and soft X ray range based on the transition radiation of electrons with an energy of about 100 keV are calculated. The possibilities of enhancing the radiation yield in the geometry of the glancing interaction of electrons with a target are ana lyzed. The possibility of creating a source with a yield on the order of 10–5 photon/(eV sr) per electron is dem onstratedyesBelgorod State National Research Universit

Observation of the enhancement of parametric radiation under conditions of the grazing incidence of relativistic electrons on the crystal surface

The enhancement of the yield of parametric X-ray radiation from 7-MeV electrons incident at a grazing angle on the silicon crystal surface has been experimentally detectedyesBelgorod State Universit

Experimental setup for studying the processes occurring during interaction of fast electrons with matter

Experimental setup designed for studying the processes occurring under fast electrons interaction with a matter is presented. The setup is based on an electron gun, which produces the electron beam with current in range from 10 nA to 5 A and electrons energies from 8 up to 60 keV. The rest parts of the setup are the electron gun chamber, electromagnetic system for the electron beam formation, target vacuum chamber, target goniometer, equipment for the beam diagnostics and spectrometr

X-ray studies of the distribution function of crystalline grains over orientation angles in mosaic crystals

The paper is devoted to theoretical and experimental studies of the new approach to X-ray diagnostics of mosaic crystals being proposed. The model of the scattering process on the crystals with the arbitrary distribution function of the crystalline grains over orientation angles is considered in detail. Experimental setup created on the base of this model is described as well as the first results of experimental studies conducted using highly oriented pyrolytic graphite with mosaicity 0.4 and 0.8 degrees

Observation of X-rays during heating a pyroelectric crystal by an infrared laser

A pyroelectric X-ray source is proposed, in which a lithium tantalate crystal is heated by an infrared laser with a wavelength of 10.6 μm. X-ray spectra measured during irradiation of the crystal with infrared radiation and during natural cooling of the crystal include characteristic X-ray radiation of atoms contained in the structural parts of the source, as well as bremsstrahlung of electrons with energies above 50 keV. An 8 mm sodium chloride window was used to inject 64 W infrared radiation into a vacuum chamber with the pyroelectric crystal installe

Investigation of neutron generation upon irradiation of deuterated crystalline structures with an electron beam

The possibility of neutron generation by irradiating deuterated crystalline structures with an electron beam with an energy of 20-40 keV was studied. As targets, the deuterated crystalline structures of palladium and textured CVD diamond were used. Measurements of neutron emission are presented, which were carried out by three independent methods-scintillation detectors, counters based on He-3, and track detectors CR-3