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Articles 1 - 30 of 36
Full-Text Articles in Physical Sciences and Mathematics
System And Process Of Thermal Neutron Flux Producing By Means Of An Accelerator Base Electron Of 18 Mev, A. Didi, A. Dadouch, H. El Bekkour, O. Jai, F. Bouhal, M. Bencheikh
System And Process Of Thermal Neutron Flux Producing By Means Of An Accelerator Base Electron Of 18 Mev, A. Didi, A. Dadouch, H. El Bekkour, O. Jai, F. Bouhal, M. Bencheikh
Eurasian Journal of Physics and Functional Materials
Neutrons are produced in accelerators by irradiating heavy targets with an electron or proton beam. Produced neutrons are of high energy. The purpose of our work is optimization the neutron flux by MCNP-6 code for production the thermal neutron flux using a moderator and for convertation the fast neutron flux into a thermal neutron flux. In this article, we are interested in a thermal neutron flux due it is useful for method of neutron activation analysis. In conventional sources, the moderator is usually a large volume of water or paraffin around the source. Initially, fast neutrons have energy above 1 …
Structure Study Of Al+Al2o3 Composite By Atomic Force Microscopy, D. S. Koleukh, A. S. Kaygorodov, S. V. Zayats, S. N. Paranin
Structure Study Of Al+Al2o3 Composite By Atomic Force Microscopy, D. S. Koleukh, A. S. Kaygorodov, S. V. Zayats, S. N. Paranin
Eurasian Journal of Physics and Functional Materials
The structure of a metal matrix composite based on aluminum containing 6, 17 and 24 wt % Al2 O3 was studied by atomic force microscopy. The composite was prepared by the method of magneticpulse compaction from aluminum nanopowder obtained by the electric wire explosion method. The samples compacted at 400 ◦ C have more clearly expressed grain boundaries than those obtained at room temperature. The structure of a composite subjected to dynamic plastic deformation is studied.
Synthesis And Investigation Of Optical Properties Of Cdse Quantum Dots With High Quantum Luminescence Yield, A. Z. Kainarbay, T. N. Nurakhmetov, Z. M. Salikhodja, A. M. Zhunusbekov, D. K. Daurenbekov, B. Sadykova, B. Yussupbekova, K. Zhanylysov, A. Kainarbayeva, N. Adalbek, N. Shaken, A. Turmakhanbetova, K. N. Balabekov
Synthesis And Investigation Of Optical Properties Of Cdse Quantum Dots With High Quantum Luminescence Yield, A. Z. Kainarbay, T. N. Nurakhmetov, Z. M. Salikhodja, A. M. Zhunusbekov, D. K. Daurenbekov, B. Sadykova, B. Yussupbekova, K. Zhanylysov, A. Kainarbayeva, N. Adalbek, N. Shaken, A. Turmakhanbetova, K. N. Balabekov
Eurasian Journal of Physics and Functional Materials
In the present work, an attempt to obtain quantum dots with a high quantum luminescence yield has been made. For this purpose, the existing methods of synthesis have been studied; approbation of availability and reproducibility of the results and possibility of obtaining luminescent QD samples in the required spectral region has been made. The optical characteristics, the influence of the synthesis conditions, the possibility of using nanostructured materials for sensitization of solar cells have been studied.
Some Radiation Effects In Ii-Vi Quantum Dots, M. B. Sharibaev, Q. A. Ismailov
Some Radiation Effects In Ii-Vi Quantum Dots, M. B. Sharibaev, Q. A. Ismailov
Eurasian Journal of Physics and Functional Materials
The effect of electron irradiation (E=0.6-1.8 MeV) on the optical characteristics (photoluminescence, PL) of CdTe/ZnTe structures with quantum dots, QDs, was investigated in the temperature range from 4.2 to 250 K. The data on the influence of irradiation on the temperature dependence of PL intensity, energy position and PL line width, W, from QDs were obtained. The narrowing of PL band and the blue shift of the QD peak position are explained by quenching of the low energy component connected with larger QDs. A slight decrease in PL intensity for both QDs and the buffer ZnTe layer as well as …
Influence Of Structural Defects In Silicon On Formation Of Photosensitive Heterostructures Mn4si7-Si-Mn4si7 And Mn4si7-Si-M, T. S. Kamilov, A. S. Rysbaev, V. V. Klechkovskaya, A. S. Orekhov, Sh. Kh. Dzhuraev, A. S. Kasymov
Influence Of Structural Defects In Silicon On Formation Of Photosensitive Heterostructures Mn4si7-Si-Mn4si7 And Mn4si7-Si-M, T. S. Kamilov, A. S. Rysbaev, V. V. Klechkovskaya, A. S. Orekhov, Sh. Kh. Dzhuraev, A. S. Kasymov
Eurasian Journal of Physics and Functional Materials
The paper considers the influence of a transition amorphous layer at the interface between the higher manganese silicide (HMS) Mn 4 Si 7 and silicon doped with manganese (Si ) on the photoelectric properties of heterostructures. The role of the initial structural defects in the near-surface layers of the single-crystal silicon on the penetration of manganese atoms into Si upon doping from the gas phase is shown.It has been established that at high temperatures (T>1050 ◦ C) Mn atoms deposited on the silicon surface group together (due to surface diffusion), forming droplets of liquid manganese, which dissolve the near-surface …
Development Of Thermal Sensors By Implantation Ions P+ And B+ In Different Sides Of Si(111), I. R. Bekpulatov, A. S. Rysbaev, Sh. Kh. Dzhuraev, A. S. Kasymov
Development Of Thermal Sensors By Implantation Ions P+ And B+ In Different Sides Of Si(111), I. R. Bekpulatov, A. S. Rysbaev, Sh. Kh. Dzhuraev, A. S. Kasymov
Eurasian Journal of Physics and Functional Materials
In the method of high-phase ion implantation of P + and B + to different sides of monocrystal silicon we obtained p-i-n- structure, which has a high thermal sensitivity of 2.3 mV/K in a broad band temperature of (20 ÷ 550) K. We studied the distribution profile P and B atoms implanted in the Si gradually decreasing energy. The effect of the subsequent thermal and annealing IR profile on the distribution of the atoms and the characteristics of the temperature sensor was studied.
New Mocd2 Phase In Film Coatings Of Molybdenum-Cadmium System, Yu. Zh. Tuleushev, V. N. Volodin, Y. A. Zhakanbaev
New Mocd2 Phase In Film Coatings Of Molybdenum-Cadmium System, Yu. Zh. Tuleushev, V. N. Volodin, Y. A. Zhakanbaev
Eurasian Journal of Physics and Functional Materials
Ion-plasma sputtering and code position of Mo and Cd ultrafine particles have been used for the first time to prepare solid solutions that are alloys with a concentration up to 57.3 at. % Cd in the film; this confirms the thermal-fluctuation and coalescence of small particles. When coatings are formed by molyb-denum and cadmium nanolayers less than 2 nm in the concentrations range of 60-66 at. % Cd, a new phase was found that was prepared directly in the course of film coating formation; it was identified as the MoCd2 compound with a tetragonal face-centered lattice, with the parameters …
Different Methods Of Correcting The Readings Of The Dvgn-01 Albedo Neutron Dosimeter Placed Behind The Ibr-2m Protection, Yu. V. Mokrov, S. V. Morozova, G. N. Timoshenko, V. A. Krylov, O. B. Badunov, G. A. Seilkhanova
Different Methods Of Correcting The Readings Of The Dvgn-01 Albedo Neutron Dosimeter Placed Behind The Ibr-2m Protection, Yu. V. Mokrov, S. V. Morozova, G. N. Timoshenko, V. A. Krylov, O. B. Badunov, G. A. Seilkhanova
Eurasian Journal of Physics and Functional Materials
The paper presents the results of correction of readings of DVBN-01 albedo dosimeters behind IBR-2M protection, the Neutron Physics Laboratory of the Joint Institute for Nuclear Research (JINR), Dubna, byvarious methods. The neutron spectra were measured at two points behind the IBR-2M protection in the experimental halls, and measurements were carried out with the spherical albedo system at these points. The correction coefficients for DVGN-01 were calculated from the measured spectra based on the data of the spherical albedo system. A good agreement of the coefficients calculated by different methods is shown, which indicates the reliability of the obtained values …
Analysis Of (11li+9be)-Reaction In The Framework Of The Time-Dependent Schrodinger Equation, A. K. Azhibekov, K. A. Kuterbekov, V. V. Samarin
Analysis Of (11li+9be)-Reaction In The Framework Of The Time-Dependent Schrodinger Equation, A. K. Azhibekov, K. A. Kuterbekov, V. V. Samarin
Eurasian Journal of Physics and Functional Materials
Neutron transfer and nucleus breakup cross sections in (11Li + 9Be) -reaction are calculated at energy range up to 32 MeV/nucleon. The evolution of probability density of external weakly bound neutrons of 11Li and the probabilities of neutron transfer and nucleus breakup are determined based on a numerical solution of the time-dependent Schrodinger equation. Our calculation results are agree with the experiment.
Metal-Insulator Transitions And Nanoscale Phase Separation In Various Underdoped Cuprates, S. Dzhumanov, U. T. Kurbanov
Metal-Insulator Transitions And Nanoscale Phase Separation In Various Underdoped Cuprates, S. Dzhumanov, U. T. Kurbanov
Eurasian Journal of Physics and Functional Materials
We demonstrate that the unconventional electron-phonon interactions, charge inhomogeneity and charge ordering in underdoped cuprates play an important role in metal-insulator transitions and nanoscale phase separation. In so doing, we argue that charge carriers (i.e. hole polarons) in these systems segregate into insulating (carrier-poor) and metallic/superconducting (carrier-rich) regions as a result of their specific ordering. We show that the metal-insulator transitions, nanoscale phase separation and coexisting insulating and metallic/superconducting phases are manifested in the unusual temperature dependences of the magnetic susceptibility and resistivity and in the suppression of superconductivity in various underdoped cuprates.
Phase Analysis, Thermal And Thermoelectric Properties Of Nanocrystalline Na0.15cu1.85s, Alloys Na0.17cu1.80s, Na0.20cu1.77s, M. Kh. Balapanov, M. M. Kubenova, K. A. Kuterbekov, A. Kozlovskiy, S. N. Nurakov, R. Kh. Ishembetov, R. A. Yakshibaev
Phase Analysis, Thermal And Thermoelectric Properties Of Nanocrystalline Na0.15cu1.85s, Alloys Na0.17cu1.80s, Na0.20cu1.77s, M. Kh. Balapanov, M. M. Kubenova, K. A. Kuterbekov, A. Kozlovskiy, S. N. Nurakov, R. Kh. Ishembetov, R. A. Yakshibaev
Eurasian Journal of Physics and Functional Materials
Synthesis, X-ray phase analysis, electron microscopy and investigations of the thermoelectric and thermal properties of nanocrystalline copper sulfide alloys contained sodium are presented. At room temperature, the alloys are a mixture of three phases of copper sulfide - the monoclinic phase of Na2Cu4S3 , the hexagonal phase of Cu2S and the cubic phase of Cu9S5 (digenite). The predominant phase is Na2Cu4S3 (with content from 57 to 85 volume %). The particle sizes in the compacted samples lie in the range from 20 to 400 nm. …
Neutrino Oscillation Induced By Horizontal Symmetry, X. Wang, Y. Li, X. Chen
Neutrino Oscillation Induced By Horizontal Symmetry, X. Wang, Y. Li, X. Chen
Eurasian Journal of Physics and Functional Materials
To obtain the interactions which cause neutrino flavor conversion, we introduce a horizontal symmetry into the standard model (SM) and propose the hypothesis that new interactions generated by the horizontal symmetry lead to neutrino flavor conversion and oscillation. To support our hypothesis, we evaluate the flavor conversion probability by new interactions by utilizing the definition of cross section, and the prediction is consistent to experimental data. From our hypothesis, neutrino oscillation is fluctuation of flavor distribution before arriving at equilibrium.
Magnetron Deposition Of Yttria-Stabilised Zirconia Electrolyte For Solid Oxide Fuel Cells, A. A. Solovyev, A. V. Shipilova, S. V. Rabotkin, I. V. Ionov, E. A. Smolyanskiy
Magnetron Deposition Of Yttria-Stabilised Zirconia Electrolyte For Solid Oxide Fuel Cells, A. A. Solovyev, A. V. Shipilova, S. V. Rabotkin, I. V. Ionov, E. A. Smolyanskiy
Eurasian Journal of Physics and Functional Materials
The aim of the article is to review the latest achievements in the field of magnetron deposition of thinfilm yttria-stabilised zirconia (YSZ) electrolyte for solid oxide fuel cells (SOFC). The main attention is paid to the use of magnetron sputtering for formation of YSZ electrolyte up to 10 μm thick on the anode substrates of intermediate-temperature SOFCs operating at a temperature of (600 - 800)°C . The influence of the types of power sources and such deposition parameters as substrate temperature, substrate bias voltage, post-annealing treatment, etc., as well as the morphology of the anode substrate surface on the microstructure …
Synthesis Of Boride-Titanium Coatings By Magnetron Sputtering Of Composite Targetss, A. S. Larionov, E. A. Zhakanbaeyev, A. L. Kozlovski, A. S. Dikov, S. B. Kislitsin, L. V. Chekushina
Synthesis Of Boride-Titanium Coatings By Magnetron Sputtering Of Composite Targetss, A. S. Larionov, E. A. Zhakanbaeyev, A. L. Kozlovski, A. S. Dikov, S. B. Kislitsin, L. V. Chekushina
Eurasian Journal of Physics and Functional Materials
The paper presents the results of investigations of the structure and phase composition of titanium boride coatings deposited by magnetron sputtering from a target of a complex composition onto a steel substrate. The target for magnetron sputtering was obtained by sintering boron carbide and titanium powders. The structure and elemental composition of the coating were studied using X-ray diffractometry (XRD), scanning electron microscopy (SEM) and the energy-dispersive spectral (EDS). It was established that the coatin g structure is a mixture of Ti2B5 and TiB12 phases with the total boron content of ≈ 80 at %, which …
Changing The Structure And Phasestates And The Microhardness Of The R6m5 Steel Surface Layer After Electrolytic-Plasma Nitriding, B. K. Rakhadilov, Sh. R. Kurbanbekov, M. K. Kilishkhanov, A. B. Kenesbekov, S. Amanzholov
Changing The Structure And Phasestates And The Microhardness Of The R6m5 Steel Surface Layer After Electrolytic-Plasma Nitriding, B. K. Rakhadilov, Sh. R. Kurbanbekov, M. K. Kilishkhanov, A. B. Kenesbekov, S. Amanzholov
Eurasian Journal of Physics and Functional Materials
The article examines the changes of the structural-phase states and the microhardness of the R6M5 steel surface layer after electrolytic-plasma nitriding. It is found that after electrolytic-plasma nitriding of the R6M5 steel surface, diffusion layer is formed, which is a nitrogen martensite. The phase composition of the diffusion layer varies depending on the nitriding temperature. An increase of R6M5 steel microhardness, depending on structural-phase state, is found out. The main factor, in fluencing the increase of microhardness of R6M5 high-speed steel with electrolytic-plasma nitriding, is the formation of nitro . gen martensite with monophasic nitride Fe4N ( γ-phase), …
The Nature Of Luminescence Of Ki And Ki-Na Crystals At Low Temperature Deformation After Natural Decrease In The Symmetry Of The Lattice, K. Shunkeyev, N. Zhanturina, L. Myasnikova, D. Sergeyev, Z. Aimaganbetova, Sh. Sagimbaeva, A. Barmina, Zh. Ubaev
The Nature Of Luminescence Of Ki And Ki-Na Crystals At Low Temperature Deformation After Natural Decrease In The Symmetry Of The Lattice, K. Shunkeyev, N. Zhanturina, L. Myasnikova, D. Sergeyev, Z. Aimaganbetova, Sh. Sagimbaeva, A. Barmina, Zh. Ubaev
Eurasian Journal of Physics and Functional Materials
The X-ray luminescence spectra at low temperature (90K) uniaxial deformation were researched for KI and KI-Na crystals, that were stored for more than 10 years. The following regularities were observed: firstly, the intensities of the intrinsic emission bands at 3.3 eV (π) and 4.1 eV ( σ ) become equal in com- parison with freshly grown crystals; and secondly, with an increase in the degree of low-temperature uniaxial deformation, a gradual shift of the emission spectra occurs in two directions: the luminescence maximum at 3.3 eV shifts towards short wavelengths, the final position is fixed at 3.9 eV, which prac- …
A Brief Review Of Conductivity And Thermal Expansion Of Perovskite-Related Oxides For Sofc Cathode, A. V. Nikonov, K. A. Kuterbekov, K. Zh. Bekmyrza, N. B. Pavzderin
A Brief Review Of Conductivity And Thermal Expansion Of Perovskite-Related Oxides For Sofc Cathode, A. V. Nikonov, K. A. Kuterbekov, K. Zh. Bekmyrza, N. B. Pavzderin
Eurasian Journal of Physics and Functional Materials
Cathode materials with mixed ion-electron conductivity (MIEC) are necessary for the development of low or intermediate temperature solid oxide fuel cells. Perovskite and perovskite-related materials are promising candidates on this role. In the review the conductivity and the thermal expansion of materials with various types of perovskite-related structures such as pure perovskite, double perovskite, brownmillerite and Ruddlesden-Popper phases have been compared. And the literature data on the values of the electronic and ionic conductivities, the oxygen diffusion coefficient, and the thermal expansion coefficient of various compositions have been collected. It was shown that the disordered cubic perovskites possess the higher …
Structural Evolution Of Ceramic Coatings Produced By Mechanical Alloying Technique, Zh. B. Sagdoldina, B. K. Rakhadilov, O. A. Stepanova, A. Maulit
Structural Evolution Of Ceramic Coatings Produced By Mechanical Alloying Technique, Zh. B. Sagdoldina, B. K. Rakhadilov, O. A. Stepanova, A. Maulit
Eurasian Journal of Physics and Functional Materials
The article researches formation of ceramic coatings of zirconium dioxide (ZrO2) on the X12CrNi1810Ti steel surface after mechanical alloying. Study of coatings’ surface showed coalescence of defected coating’s particles with created subgrains and this process is more representative due to different toughness of zirconium oxide and steel. It is suggested that adhesive bond between the coating and support structure is provided by strain welding of the powder on the support structure coating. When using X-phase analysis neither diffusive mixing of coating/support structure components or formation of new compounds and phase changes was revealed. Surface contamination of the coating …
Decreasing Of The Concentration Quenching Of Fluorescent Dye In A Solution By Introducing It To Nanoparticles Of Silicon Dioxide, V. G. Lukiaschenko, V. E. Messerle, A. B. Ustimenko, K. A. Umbetkaliev
Decreasing Of The Concentration Quenching Of Fluorescent Dye In A Solution By Introducing It To Nanoparticles Of Silicon Dioxide, V. G. Lukiaschenko, V. E. Messerle, A. B. Ustimenko, K. A. Umbetkaliev
Eurasian Journal of Physics and Functional Materials
The article presents the results of experimental studies of a double-chamber linear circuit DC electric arc plasmatron in experimental and industrial conditions. The electric arc plasmatron of the VORTEX-200 linear circuit with a rated power of 200 kW is designed for plasma ignition of a pulverized-coal torch, its stabilization and oil-free ignition of pulverized-coal boilers of thermal power plants.The linear circuit plasmatron contains two water-cooled casings isolated from each other, one of which has a hollow cylindrical electrode - a cathode having swirlers of the plasma-forming gas at both ends, and the other has an output electrode - an anode-diffuser …
Ecologically Safe Experimental Purpose Application Of Microwaves In The Treatment Of Chronic Neurological Disorders: Optimization And Risks, K. Arkhypova, A. Nosatov, M. Nurushev, P. Krasov, A. Fisun, A. Nurusheva
Ecologically Safe Experimental Purpose Application Of Microwaves In The Treatment Of Chronic Neurological Disorders: Optimization And Risks, K. Arkhypova, A. Nosatov, M. Nurushev, P. Krasov, A. Fisun, A. Nurusheva
Eurasian Journal of Physics and Functional Materials
Current paper describes the experimental dual-purpose application of microwaves in a controlled clinical trial on optimizing therapy for chronic neurological disorders. As a part of integrated treatment, low-intensity microwave-assisted blood modification has been used. It represents a physiotherapeutic method based on the autologous blood transfusion (self-blood treatment) after the short-term exposure to microwaves ( lambda = 7.2 mm). Because of beneficial clinical impact of the microwave autohemotherapy previously observed, we aimed to find a possible way to track a manifestation of nonthermal microwave effects. For this purpose, we have applied a microwave single-frequency ( lambda = 7.6 mm) dielectrometry technique …
Investigation Of The Stability Of Nanostructures To Degradation, A. V. Petrov, I. E. Kenzhina, A. L. Kozlovskiy, K. K. Kadyrzhanov
Investigation Of The Stability Of Nanostructures To Degradation, A. V. Petrov, I. E. Kenzhina, A. L. Kozlovskiy, K. K. Kadyrzhanov
Eurasian Journal of Physics and Functional Materials
The paper presents the dependence of the degradation degree in various aggressive media and time in a medium. The greatest deterioration in crystallographic characteristics of nanostructures in corrosive media is observed on the day 10th , which is due to partial destruction of the crystal structure as a result of oxidation processes. Also, an increase in the oxygen concentration in the structure leads to an increase in disorder regions, amorphization, and subsequent destruction of samples.
Development Of Electroforming Method For Coating Of Polymer Membranes By Graphene Oxide, F. R. Sultanov, Ch. Daulbayev, B. Bakbolat, Z. A. Mansurov
Development Of Electroforming Method For Coating Of Polymer Membranes By Graphene Oxide, F. R. Sultanov, Ch. Daulbayev, B. Bakbolat, Z. A. Mansurov
Eurasian Journal of Physics and Functional Materials
The current research is focused on development of electroforming method for coating of porous membranes by graphene oxide. A mixture based on polymethylmetacrylate dissolved in acetone and graphene oxide was pumped through the syringe pump onto the needle and high voltage was applied to both electrodes, one of which was on a glass plate, and the second was a needle thereby forming fibers, which coated the surface of membrane uniformly. The main parameters and concentrations of used polymer for uniform and complete coating of the surface of membrane are studied. Surface morphology of coated membranes was studied by SEM.
Decreasing Of The Concentration Quenching Of Fluorescent Dye In A Solution By Introducing It To Nanoparticles Of Silicon Dioxide, A. I. Mantel, A. E. Yensebayeva, S. B. Smatov, I. S. Irgibayeva
Decreasing Of The Concentration Quenching Of Fluorescent Dye In A Solution By Introducing It To Nanoparticles Of Silicon Dioxide, A. I. Mantel, A. E. Yensebayeva, S. B. Smatov, I. S. Irgibayeva
Eurasian Journal of Physics and Functional Materials
The technique of introduction a fluorescent dye Tris(bipyridine)ruthenium (II) chloride into nanoparticles of silicon dioxide in isopropyl alcohol was tested. The preparation of nanoparticles was carried out by means of the Stober method. The optimal reaction conditions were determined. It was found out that the penetration of a dye into silicon dioxide nanoparticles reduced the effect of concentration quenching of the dye and made it possible to achieve an increase in fluorescence intensity in the solution more than twofold. An attempt was made to functionalize the obtained particles by introducing amino groups onto the particle surface. Fused silver nanoparticles were …
Effect Of Omega(782) Resonance On The Response Functions For D(E,E'Π+)Nn Reaction, M. Tammam, Z. M. Mahmoud, M. S. Koubisy
Effect Of Omega(782) Resonance On The Response Functions For D(E,E'Π+)Nn Reaction, M. Tammam, Z. M. Mahmoud, M. S. Koubisy
Eurasian Journal of Physics and Functional Materials
In present work we study the effect of the Omega ( ω(782) ) resonance on the response functions for the incoherent positive pion electroproduction forms the deuteron at different values for the four-momentum transfers squared (Q2 ) and the virtual photon lab energy ( klab0 ). The study is carried out in the impulse approximation (IA) i.e. the final state interactions are neglected. The elementary amplitude for pion electroproduction is taken from the MAID-2007 model. The effect seems to be very small but almost increase with increasing the virtual photon lab energy.
Evaporation And Thermal Stresses In Molybdenum Irradiated By Electrons, G. Z. Ganeev, S. B. Kislitsin
Evaporation And Thermal Stresses In Molybdenum Irradiated By Electrons, G. Z. Ganeev, S. B. Kislitsin
Eurasian Journal of Physics and Functional Materials
Plasma disruption in the thermonuclear facility leads to a release of large energy flows to the chamber wall. The pulse duration is 10-6 -10-4 s, energy fluxes are of the order of 108 - 1011 Wm-2 . High temperature of the protective coating surface causes its evaporation and, probably, destruction under the action of thermal stresses. A promising material for the first wall protection is, in particular, molybdenum. In order to check suitability of molybdenum as a protective coating, an experiment on irradiation of a molybdenum sample with electrons (parallelepiped - 2x10x0.3 mm) was carried …
Study Of Integral Characteristics Of The Turbulent Jet Elements Of Power Plants, M. S. Isatayev, Zh. K. Seydulla, A. Dosanova, Zh. Tolen
Study Of Integral Characteristics Of The Turbulent Jet Elements Of Power Plants, M. S. Isatayev, Zh. K. Seydulla, A. Dosanova, Zh. Tolen
Eurasian Journal of Physics and Functional Materials
The work represents the results of experimental research of aerodynamics of three dimensional turbulent jets flowing from nozzles with rectangle outflow face. The results of measurements of average and pulse flow characteristics of threedimensional jets are given. The data on axis speed and turbulence intensity are given and an attempt to reveal their interrelation is made. The results of experimental data comparison on axis speed attenuation of three dimensional jets with the data for axis symmetric stream are presented.
Neutron Flux Distribution In (Pb,Ta And W) Target Using Accelerator Of 18 Mev Electron Beam, A. Didi, A. Dadoucha, O. Jai, M. Bencheikh
Neutron Flux Distribution In (Pb,Ta And W) Target Using Accelerator Of 18 Mev Electron Beam, A. Didi, A. Dadoucha, O. Jai, M. Bencheikh
Eurasian Journal of Physics and Functional Materials
The production of neutrons can be carried out with the bombardment of the nuclei of heavy atoms, with accelerated and energetic particles (generally electrons). The electron collides with the target nuclei, so, 20 to 30 neutrons are produced by a process called "spallation". Several countries begin to develop neutron sources especially in the United States, Europe and Japan. The development of new measuring instruments and methods has generally increased the demand for neutron utilization in several areas, such as accelerator proton-based, where protons bombard a heavy metal target. The atoms of the target are excited, resulting in neutron emission.
Matter Distributions Of Light Nuclei Within The Three-Body Model, B. A. Urazbekov, A. S. Denikin
Matter Distributions Of Light Nuclei Within The Three-Body Model, B. A. Urazbekov, A. S. Denikin
Eurasian Journal of Physics and Functional Materials
Matter distributions of light nuclei in the three body model [6He,6Li : (α + n + n) and9Be : (α + α + n)] is theoretically expressed. As a quantum state of the system was adopted a wave function based on the multi dynamic cluster model. Within the multi dynamical cluster model with Pauli projection, matter density distribution and matter rms radius for nuclei6He,6Li,9Be were analytically calculated. Comparisons of calculated matter radii with experimental data are presented.
Study Of Fe3o4 Nanoparticles Degradation Process, A. Kozlovskiy, D. Tuleubayeva, K. K. Kadyrzhanov
Study Of Fe3o4 Nanoparticles Degradation Process, A. Kozlovskiy, D. Tuleubayeva, K. K. Kadyrzhanov
Eurasian Journal of Physics and Functional Materials
The purpose of this work was to study the oxidation and destruction processes of Fe3O4 nanoparticles. As a result, dynamic changes in structure and phase composition of Fe3O4 nanoparticles in various pH media was set. The acidity and time dependence of degradation degree on the pH medium was established. It was associated with the appearance of amorphous regions which is due to the presence of hydroxide compounds. By understanding of the nanoparticles degradation rate and degree it becomes possible to clarify the residence time for the nanoparticles, which in turn makes them potential materials …
Optical Assembly For Laser Alignment Of Shafts, I. G. Arslanov, I. G. Galeev, R. N. Suleymanov, O. V. Filimonov, K. T. Tincherov
Optical Assembly For Laser Alignment Of Shafts, I. G. Arslanov, I. G. Galeev, R. N. Suleymanov, O. V. Filimonov, K. T. Tincherov
Eurasian Journal of Physics and Functional Materials
The article presents a new method of increasing laser radiation power of the receiving device while performing align- ment for reducing excessive pump vibration. The optical arrangement and device design are presented. The possibility of application of glass system with definite refraction index of laser beam system sweeping in a line direction is theoretically justified. The paper presents that the beam sweeping in immediate proximity to a receiving device allows to increase the "beam force/disturbance force ratio" without increasing the laser power. The results of the experimental comparative testing are described. The experiment was conducted in plant conditions of Formation …