The Quantulus 1220 is a liquid scintillation counting (LSC) system for the quantitative measurement of extremely low levels of alpha and beta activity. With both passive and active shielding, the Quantulus 1220 employs a universal background reduction system which is optimized according to type of analysis.
In the Centre of Isotopic Research (CIR) of FGBU «VSEGEI» Quantulus 1220 is used for...
Gamma radiation spectrometric detection units based on lanthanum bromide LaBr3 (Ce) have significantly better energy resolution in comparison with detection units based on common NaI (Tl) crystals. To provide measurements in fields of high-energy gamma radiation in energy range from 30 keV to 10 MeV an experimental detection unit based on a LaBr3 (Ce) detector with dimensions of Ø38x38 mm was...
The results of development of new method for in situ gamma spectroscopy determination of radioactive soil contamination are presented. The novelty of the method developed is that no priori assumptions about the distribution of nuclides in the soil and no soil sampling are needed. Only in situ spectra measured over the territory of interest are used.
The method is based on attenuation factor...
Dark matter remains one of the few fundamental problems of particle physics and cosmology that is not explained in the Standard Model (SM). Today, the direct search for dark matter results in a limitation on parameter space of mass and the spin-independent cross section of WIMP interaction.
For low mass WIMPs, the best results are shown by the noble liquid time projection chambers (TPCs)....
Investigation of the radiation-catalytic properties of nano-ZrO2 + nano-SiO2 systems in the process of producing hydrogen from water by IR spectroscopy
Agayev T.N., Melikova S.Z.,
Institute of Radiation Problems NAS of Azerbaijan,
e-mail: sevinc.m@rambler.ru
This paper presents the results of Fourier-IR spectroscopic studies of the radiation decomposition of water in a heterogeneous...
Despite numerous studies of radon emanation [1-3], the problem of studying the distribution of radon concentrations in the surface atmospheric layer of the Earth is relevant. The contribution of radon and its daughter decay products to the general background radiation is large and amounts to more than 50%. Time of variations of radon emanation, studied by the authors of [4], showed its strong...
Description of a semiconductor system for selection of events in the reactions of stopped pion absorption by nuclei (1, 2) is presented. The system consists of two thin silicon detectors. The regions of energy release in the detectors corresponding to pion stops in the targets are determined using a “live” target - a silicon detector of a certain thickness. The thicknesses of other targets...
Very perspective material for fabrication radiation-tolerant electronics, high-temperature electronics as well as for nuclear radiation detectors of ionizing radiation for working in harsh environments is silicon carbide (SiC). Mainly, 4H-SiC polytype is mostly investigated for its physical properties, e.g.: the band gap energy is 3.26 eV, the mean energy of electron-hole pair creation is...
Energy resolution of spectrometric instruments for radiation control systems today should be below 4.5% as required by international standards. Example, the American national standard ANSI N42.34-2015 introduces a requirement for the resolution of RID spectrometer channel to be not above 4%.
Developed a spectrometric detection unit based on scintillation SrI2(Eu) detector. According to the...
A source of electrons and gamma quanta for nuclear detectors calibration is described. The source was developed on the basis of the LUE-8-5 electron accelerator of the INR RAS. The electrons energy is variable within 4 – 10 MeV. The energy resolution (FWHM) is better than 1%, the counting rate is of order of one particle per acceleration cycle. Repetition rate is up to 300 s-1. beam pulse...