Features of the transition radiation generated by weakly-relativistic electrons in the regime of grazing escape from a flat target

Features of the transition radiation (TR) generated in the vacuum ultraviolet range by weakly-relativistic electrons escaping from a target at small (grazing) angles have been theoretically studied. A significant (more than tenfold) increase in the angular density of TR with decreasing escape angle is predicted. It is established that the spectral and angular distribution of the TR intensity significantly depends on the target permittivity and the electron energy and escape angleyesBelgorod 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

On the possibility of using parametric X-ray radiation to study anisotropy of a crystal mosaic structure

Parametric X-ray radiation (PXR) of relativistic electrons moving in a mosaic crystal is considered. A strong dependence of the PXR angular spectral distribution on the mosaic structure is shownyesBelgorod State Universit

DarkSide status and prospects

DarkSide uses a dual-phase Liquid Argon Time Projection Chamber to search for WIMP dark matter. The current detector, DarkSide-50, is running since mid 2015 with a target of 50 kg of Argon from an underground sourc

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

Defining the distribution function of mosaic crystal grains on orientation angles using synchrotron radiation

A new method of measuring the angular distribution function of grains in mosaic crystals is proposed and studiedye

About a contactless transmission of 10 keV electrons through tapering microchannels

The possibility of increasing the current density of a beam of fast electrons passes through glass cone-shaped channels was demonstrated in. But the fraction of the electrons that passed through the conical channels without loss of the initial energy was not cleared up. Measurements of X-ray spectra generated by transmitted electrons in copper target mounted in vicinity of capillary output were performed for a detailed study of the contactless passage of 10 keV electrons through conical capillarie

Modernization of the pulse shape discrimination method for neutron and gamma quanta in scintillation detector

In this paper, we investigated the efficiency of several known and new methods of digital pulse shape discrimination for neutrons and gamma quanta. Experimental data were obtained on a setup consists of a Pu-Be neutron source, organic p-terphenyl scintillation detector and 14 bits, 500 MHz sampling rate flash-ADC with capability to store and upload to the host computer long waveforms for further analysi

Investigation of the interaction of ion beams and X-ray quanta with deuterated crystal structures at the HELIS facility

The results of studies of the interaction of ion beams and X-ray quanta with deuterated crystal structures at the HELIS facility (LPI) are presente

Piezoelectric accelerator

Here we propose the conception of small-size piezoelectric accelerator of charged particles that operates due to the piezoelectric effect at varying mechanical force applied to piezoelectrics in vacuum. The accelerating voltage and the energy of accelerated particles are estimated. In the proof-of-principle experiment we demonstrate the effect of the emission of X-ray radiation at the mechanical compression of piezoelectric ceramics in vacuu