For analysis to the Laboratory of Neutron Physics named after I.M. Frank of the Joint Institute for Nuclear Research was provided with a fragment of the Chelyabinsk meteorite weighing 133.13 g. The fragment of the meteorite studied by us is a melted sample of an elongated-rounded shape and covered with a black melting crust (thermogenic border) with a thickness of 0.1 to 1 mm. For the first...
Energy storage technology based on lithium-ion electrochemical systems makes it possible to manufacture batteries with high specific energy and power densities. Over the past decades such batteries have been the most widely used ones in applications related to electric vehicles, portable electronics, and robotics.
The main area of research aimed at improving the specific...
Key words: European Spallation Source – neutron choppers – radiation resistance – applied research – microstructural damages
Abstract
European Spallation Source (ESS) is designed as the world's most powerful neutron source, allowing to realize scientific breakthroughs in research concerning energy, materials, health and environment. Depending on the field of research, different neutron...
One of the promising areas of nanotechnology development is the medical field of application of nanostructures. Nanomedicine is a rapidly developing area in the last decade, including methods for the prevention, diagnosis and treatment of a wide range of diseases using various types of nanostructures. The control of the shape, size, and chemical composition of nanostructures allows to set...
Heterostructures of high quality А3В5 arsenides with a quantum well based on In-Ga1-уAs exhibit high mobility of a two-dimensional electron gas and are actively used in microwave heterostructure electronics. In the heterostructures, the current-conducting layer is very thin — of the order of 10–20 nm, enclosed between wide-gap barriers; therefore, the radiation physics of such structures may...
In 2019, a new experimental station TITAN (TITAN - “Transmission Imaging with ThermAl Neutrons”) was put into operation at the research reactor WWR-K (Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan, Almaty, Kazakhstan) to conduct research on non-destructive testing of materials using neutron radiography and tomography. The neutron radiography and tomography unit...
The results of irradiation of plastic scintillators with flat tile configuration are presented here. Radiation-resistant scintillators are required for the upgrade of the CMS Hadron Endcap Calorimeter for the work at the HL-LHC (Upgrade Phase-II). Given the scintillation part dimensions of the CMS detector, the results of this work are extremely relevant.
According to these conditions, the...
In this work the Raman spectroscopy method was used to study the radiation damage and associated internal mechanical stresses in polycrystalline silicon nitride ($Si_3N_4$). $Si_3N_4$ samples have been irradiated with swift heavy Xe and Bi ions with energies of 167 and 710 MeV, respectively, in the range of fluences from 1E11 to 4.87E13 $ions/cm^2$. The spectra of the cross-section of the...
