The passage of 10 keV electron beam through a bundle of a hollow polysulfone fiber with an inner channel diameter of 160 ± 60 μm was studied. Dependence of a fraction of the electron beam transmitted through the channels on the tilt angle of the channels relative to the incident beam axis is measured. The fraction of electrons that experienced energy losses of less than 10% after passing through the channels was estimated.

Passage of a 10-keV electron beam through a bundle of hollow polysulfone fiber with an inner channel diameter of 160 ± 60 µm was studied. The dependence of the electron beam that passed through the channels on the channel tilt angle with respect to the incident beam axis was measured. The fraction of electrons with an energy loss of less than 10% after passing the channels was also estimated.

The first observation of Parametric X-ray Radiation (PXR) produced in a crystalline powder constituted of crystallites whose largest dimensions are of the order of some nanometers is reported. PXR was registered during the interaction of a 7 MeV electron beam with a platinum powder. The experimental results were compared with the kinematical theory showing a good agreement concerning the position, form, and intensity of all observed PXR spectral peaks. Finally, an analysis of the influence of crystallite dimensions on the PXR peak full width hall maximum (FWHM) and PXR peak intensity was performed.

The Parametric X-Ray radiation (PXR) spectra and yield dependencies on the orientation angle are measured during the interaction of 7 MeV electrons with a tungsten textured polycrystalline foil for different observation angles. The effects of PXR spectral density increase and PXR yield orientation dependence broadening in the backward direction is shown experimentally for the first time. The experimental results are compared with PXR kinematical theories for both mosaic crystals and polycrystals.

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 scanner is based on measurement of yield of characteristic X-rays generated during the particle interaction with the wires made of different materials. The proposed scanner is developed and tested on the beam of electrons with energy of 40 keV . 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 discussed.

A multi-wirescanner for diagnostics of ionizing particle beams (e.g. both nonrelativistic and ultra-relativistic charged particles; X-ray and gamma photons) is proposed and discussed in the paper. The scanner is based on measurement of yield of characteristic X-rays generated during the particle interaction with the wires made of different materials. The proposed scanner is developed and tested on the beam of electrons with energy of 40 keV. 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 discussed.

In this letter, we report the observation of fast neutrons generated when a positive acceleration potential is applied to an array of orientated carbon nanotubes, which are used as an ion source. The neutrons with energy of 2.45 MeV are generated as a result of D-D fusion reaction. The dependencies of the neutron yield on the value of the applied potential and residual pressure of deuterium are measured. The proposed approach is planned to be used for the development of compact neutron generators.

Статья посвящена рассмотрению основных аспектов использования современных систем видеонаблюдения для обеспечения безопасности на объектах транспортной инфраструктуры. Также внимание уделено анализу возможностей систем видеоаналитики.

A set of experiments to study the guiding of 10keV electrons by tapered glass capillaries was performed. It is shown that the 10keV electron beam can be tightly focused by the tapered macrocapillaries. The charge/discharge processes of the capillary inlet are shown and discussed. The guiding effect was obtained for 10keV electrons by a tapered glass capillary of a simple shape. The electron beam transmission was measured for several angles.

The collimated spectra of polarization bremsstrahlung (PB) produced by 7MeV electrons in Al, Ni, Cu, Mo and W poly crystalline foils are measured and the angular dependences of the PB characteristics are studied. A comparison of the experimental results with theoretical predictions is performed. Polarization bremsstrahlung sensitivity to texture and grain size of the target in the backscattering geometry is shown. The possibility of developing a new method based on the characteristics measurement of the coherent PB component for the diagnostics of polycrystalline materials is considered.

The effect of guiding a 10-keV electron beam using dielectric plates is studied. It is shown that the electron beam after interaction with the insulator surface is deflected by this surface in different ways depending on a variety of grounding schemes of the front and back sides of plexiglass and aluminum-oxide plates. The dependence of the deflection of the beam from the plexiglass plates at different angle positions on the incident electron-beam current value is studied.

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 investigated. The experiments reveal the presence of a guiding effect of the electron passage as in the case of a glass surface. However, there are some features, such as the existence of an initial elevation angle for the case of negative inclination angles of the plate. The formation of self-consistent charge on the surface of the plexiglass and its drain when the current is turned off occur more slowly than on the glass surface. This fact points to the difference in the surface conductivity of insulators.

The article describes the modern automated traffic control systems, used for the prevention of traffic accidents.

For the first time a classical model was developed to describe quantitatively the dynamics of charge distribution formation on a planar dielectric surface during its irradiation by fast electrons at a grazing incidence. The dynamic effects of the mutual influence of the beam and the dielectric surface charge predicted by the developed model are in a good agreement with the performed experiments. The proposed model can be used to describe time dependent processes of the electron beam–dielectric surface interaction, charging up and discharging for dielectric channels of more complex shapes.

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 results.

Experimental study of electron beam reflection from a single planar surface of Plexiglas was made. The distinct guiding effect for the part of the beam was observed for 10 keV electrons within angles of incidence from 0 to +3 degrees. The experiments using Poly plates showed a number of features of the process such as the dependence of the reflection on the plate surface quality and material of the surfaces, the divisions of the beam into two parts with different behaviour depend on tilt angle and the beam current value, the effect of an elevation angle of the beam in compare with initial beam trace at negative and zero tilt angles of the plate.