Посмотр Выпуск 2021 года по дате публикации

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    • КУЛЬТУРНО-ЯЗЫКОВАЯ АДАПТАЦИЯ РЕПАТРИАНТОВ –КАЗАХОВ В УСЛОВИЯХ ВУЗОВСКОГО ОБУЧЕНИЯ 

      Агманова, А.Е. (Евразийский национальный университет имени Л.Н. Гумилева, 2017)

    • Study of gamma radiation shielding efficiency by 0.5TeO2 -(0.5-x)Bi2O3 -xWO3 glasses 

      Temir, A.; Zhumadilov, K.Sh.; Kozlovskiy, A.; Smagulova, A.; Shlimas, D.I.; Trukhanov, A.V. (2021)
      This article is devoted to the study of determination of gamma radiation shielding efficiency by new radiation-resistant glasses of the 0.5TeO2-(0.5-x)Bi2O3-xWO3 type. As a method of obtaining glasses, the method of solid-phase synthesis combined with thermal annealing and subsequent hardening was used. The amorphous nature of the synthesized samples was confirmed by X-ray ...
      2023-12-05

    • Assessment of radiation exposure in the settlements located in Stepnogorsk area 

      Ibrayeva, D.S.; Aumalikova, M.N.; Ilbekova, K.B.; Bakhtin, M.M.; Kazymbet, P.K.; Ibrayeva, Sh.S.; Zhumadilov, K.Sh. (2021)
      The Stepnogorsk area Northern Kazakhstan has a long history mining activities. Mining activities have lots of environmental and health impacts. The aims of this study were to characterizing the general radiological situation of the area and evaluate radiation exposure by scenarios in settlements. In this study radiological assessment was performed for critical group living in ...
      2023-12-05

    • Non-destructive analysis of materials by neutron imaging at the TITAN facility 

      Nazarov, K.M.; Mukhametuly, B.; Kichanov, S.E.; Zholdybayev, T.K.; Shaimerdenov, A.A.; Karakozov, K.B.; Dyussambayev, D.S.; Aitkulov, M.T.; Yerdauletov, M.; Napolskiy, P.; Kenessarin, M.; Kalymkhan, E.K.; Imamverdiyev, N.A.; Jabarov, S.H. (2021)
      Since 2019, the TITAN neutron radiography and tomography facility have been operating at the WWR-K research reactor. The experimental station is intended for a wide range of applications in various fields of science. Since the launch, several interesting works have been carried out to study the internal features of lithium-ion batteries and geophysical materials. The spatial ...
      2023-12-05

    • Assessment of the radiation situation in the territory of the Saumalkol village, located near the mothballed uranium mine of the North Kazakhstan region 

      Nygymanova, A.S.; Kuterbekov, K.A.; Bakhtin, M.M.; Karpenko, E.I.; Kabyshev, A.M. (2021)
      For the first time after the mothballing of the uranium mine, comprehensive studies were carried out to assess the radiation situation in the territory of the Saumalkol settlement in the North Kazakhstan region. On the territory of the Saumalkol settlement, pedestrian and automobile gamma surveys were carried out, the rates of the ambient equivalent dose of gamma radiation, ...
      2023-12-05

    • Study of change in beryllium oxide strength properties as a result of irradiation with heavy ions 

      Zdorovets, M.V.; Kozlovskiy, A.L.; Borgekov, D.B.; Shlimas, D.I. (2021)
      The paper presents data on changes in strength properties, including data on microhardness, crack resistance, bending strength and wear of BeO ceramics as a result of irradiation with heavy accelerated ions. The following types of ions were selected as heavy ions: O2+ (28 MeV), Ar8+ (70 MeV), Kr15+ (147 MeV), Xe22+ (230 MeV). Radiation doses were 10 13 -10 15 ion/cm2 , which ...
      2023-12-05

    • Energy transfer of intrinsic electronic excitation to impurities in the CaSO4 − Mn crystal 

      Nurakhmetov, T.N.; Salikhodzha, Zh.M.; Zhangylyssov, K.B.; Zhunusbekov, A.M.; Kainarbay, A.Zh.; Daurenbekov, D.H.; Azmagambetova, Zh.; Sadykova, B.M.; Yussupbekova, B.N.; Alibay, T.T.; Tolekov, D.A.; Tulebayeva, N. (2021)
      The nature of the impurity emission center and the energy transfer mechanisms from intrinsic electronic excitations to the Mn2+ impurity centers in the CaSO4 − Mn crystal have been investigated. The methods of vacuum ultraviolet, atomic absorption and luminescence spectroscopy are used in a wide temperature range from 5 K to 300 K. The energy transfer of intrinsic electronic ...
      2023-12-05

    • Hyperfine structure S state of muonic helium atom 

      Aznabayev, D.T.; Bekbaev, A.K.; Korobov, V.I. (2021)
      In this work the nonrelativistic ionization energies 3He2+µ −e − and 4He2+µ −e − of helium-muonic atoms are calculated for S states.The estimates are based on the variational principle of exponential expansion. Convergence of the numerical values of variational energies is studied by increasing a number of the basis functions N. That allows to claim that the obtained energy ...
      2023-12-05

    • Conducting and dielectric properties of Na3Fe2 (PO4 )3 and Na2FePO4F 

      Nogai, A.A.; Salikhodzha, Zh.M.; Nogai, A.S.; Uskenbaev, D.E. (2021)
      In this research, the structure parameters, conducting and dielectric properties of Na3Fe2(PO4)3 and Na2FePO4F polycrystals were studied obtained by solid-phase synthesis. The phase transition temperatures, conducting and dielectric parameters of Na3Fe2(PO4)3 and Na2FePO4F polycrystals were refined. A comparative evaluation of the conductive properties of Na3Fe2(PO4)3 and ...
      2023-12-05

    • Application of non-destructive neutron resonance capture analysis for investigation of women’s Old Believer cross dating back to the second half of the 17th century 

      Mazhen, S.T.; Sedyshev, P.V.; Simbirtseva, N.V.; Yergashov, A.M.; Dmitriev, A.Yu.; Ivchenkov, V.L. (2021)
      Neutron Resonance Capture Analysis (NRCA) is presently being developed at the Frank Laboratory of Neutron Physics (FLNP) to determine the elemental composition of samples. The NRCA is a nondestructive method that allows measuring objects’ bulk composition. The procedure is based on detecting neutron resonances in radiative capture and the measurement of the yield of reaction ...
      2023-12-05

    • Intrinsic emission and electron-hole trapping centers in crystals Li2SO4 -Cu 

      Nurakhmetov, T.N.; Salikhodzha, Zh.M.; Dolomatov, M.Y.; Yussupbekova, B.N.; Zhunusbekov, A.M.; Kainarbay, A.Zh.; Daurenbekov, D.H.; Sadykova, B.M.; Zhangylyssov, K.B.; Alibay, T.T.; Tolekov, D.A. (2021)
      In the present work, the emission and excitation spectra in Li2SO4-Cu crystals have been obtained by the methods of vacuum-ultraviolet and thermoactivation spectroscopy. We have studied the nature of emission from a pressed and annealed sample of Li2SO4-Cu powders. It has been revealed that at low temperatures Cu0-SO−4-centers are formed during the trap of electrons by Cu+ ...
      2023-12-05

    • Mechanisms formation of electron-hole trap centers in LiKSO4 crystall 

      Nurakhmetov, T.N.; Salikhodzha, Zh.M.; Zhunusbekov, A.M.; Kainarbay, A.Zh.; Daurenbekov, D.H.; Alibay, T.T.; Sadykova, B.M.; Zhangylyssov, K.B.; Yussupbekova, B.N.; Tolekov, D.A. (2021)
      The mechanisms of creation of electron-hole trapping centers in LiKSO4 have been investigated by the methods of vacuum and thermal activation spectroscopy. It is shown that electron-hole trapping centers are formed during the trapping of electrons by anionic complexes and localization of a hole in the lattice in the form of the radical SO−4. The appearance of phosphorescence at ...
      2023-12-05

    • Magnetic anisotropy and stability of Fe3Ga compounds 

      Inerbaev, T.M.; Abuova, A.U.; Dauletbekova, A.K.; Abuova, F.U.; Kaptagay, G.A.; Zakieva, Zh.; Eltizarova, M.; Barakov, A. (2021)
      The magnetic anisotropy energy and the stability of crystal modifications of D03 and L21 of Fe3Ga compounds are studied with the density functional theory methods. The magnetic anisotropy energy of the D03 structure is more than twice the same value for the L21 structure. The features in the electronic structure lead to the difference in the magnitude of spin-orbit interaction, ...
      2023-12-05

    • Influence of Cu+ impurity on the efficiency of creation of electron-hole trapping centers in irradiated Na2SO4 − Cu crystals 

      Nurakhmetov, T.N.; Yussupbekova, B.N.; Zhunusbekov, A.M.; Daurenbekov, D.H.; Sadykova, B.M.; Zhangylyssov, K.B.; Alibay, T.T.; Tolekov, D.A. (2021)
      The mechanisms of creation of impurity and intrinsic electron-hole trapping centers in Na2SO4 − Cu crystals have been investigated by spectroscopic methods. It is shown that impurity and intrinsic electron-hole trapping centers in the crystal lattice Na2SO4 − Cu are created in the same energy distances approximately 3.87-4.0 eV and 4.43-4.5 eV. During the annealing of electron-hole ...
      2023-12-05

    • Mechanisms for the creation of intrinsic electron-hole trapping centers in a CaSO4 crystall 

      Nurakhmetov, T.N.; Zhangylyssov, K.B.; Zhunusbekov, A.M.; Daurenbekov, D.H.; Alibay, T.T.; Sadykova, B.M.; Yussupbekova, B.N.; Tolekov, D.A. (2021)
      The mechanism of creation of electron-hole trapping centers in CaSO4 at 15-300 K was investigated by the methods of vacuum-ultraviolet and thermoactivation spectroscopy. It is shown that electron-hole trapping centers are formed upon trap of electrons in the anionic complexes SO2− 4 and localization of holes in the form of SO−4 radical. Based on the measurement of the spectrum ...
      2023-12-05

    • Measuring the yields and angular distributions of γ - quanta from the interaction between 14.1 MeV neutrons and sodium nuclei 

      Dabylova, S.B.; Kopatch, Yu.N.; Fedorov, N.A.; Grozdanov, D.N.; Ruskov, I.N.; Skoy, V.R.; Hramco, K.; Tretyakova, T.Yu.; Sakhiyev, S.K.; Marzhokhov, R.B.; Bogolyubov, E.P.; Zverev, V.I.; Barmakov, Yu.N. (2021)
      A study of the reaction of inelastic scattering of 14.1 MeV neutrons by 23 Na nuclei was carried out at the TANGRA facility using the tagged neutron method. In this work, the energies of visible γ - transitions are determined, the yields of γ -quanta are obtained, the angular distributions of γ -quanta for 23 Na are measured. The results obtained are in good agreement with the ...
      2023-12-05

    • Time-of-flight fission fragment spectrometer of the MAVR facility 

      Aznabayev, D.; Lukyanov, S.M.; Zeinulla, Zh.; Issatayev, T.; Maslov, V.A.; Mendibayev, K.; Melnik, E.V.; Smirnov, V.I.; Stukalov, S.S.; Shakhov, A.V. (2021)
      A time-of-flight system was created to register the reaction products and perform correlation measurements on a high-resolution magnetic analyzer (MAVR). The facility is located on the channel of the extracted beam of the U-400 cyclotron at the Laboratory of Nuclear Reactions JINR. The results of measuring the parameters of the time-of-flight spectrometer obtained on the basis ...
      2023-12-05

    • A comparative study of promising filter materials for neutron imaging facilities 

      Nazarov, K.M.; Kichanov, S.E.; Lukin, E.V.; Zel, I.Yu.; Kozlenko, D.P.; Zholdybayev, T.K.; Muhametuly, B.; Kenessarin, M.; Rutkauskas, A.V.; Yskakov, A.; Belova, M.O. (2021)
      The effect of sapphire and bismuth single-crystal filters and their combinations on the quality of neutron radiographic images and neutron tomography data has been studied. The parameters of the contrast of the neutron image were analyzed depending on the monocrystalline filters. Neutron transmission spectra were obtained for sapphire and bismuth single crystals. Additionally, ...
      2023-12-05

    • The nature of intrinsic recombination emission in SrSO4 irradiated with ultraviolet photons 

      Nurakhmetov, T.N.; Salikhodzha, Zh.M.; Bakhtizin, R.Z.; Zhangylyssov, K.B.; Zhunusbekov, A.M.; Kainarbay, A.Zh.; Daurenbekov, D.H.; Azmagambetova, Zh.; Sadykova, B.M.; Yussupbekova, B.N.; Alibay, T.T.; Tolekov, D.A.; Tulebayeva, N.; Adil, B. (2021)
      The synthesized SrSO4 crystalline powders were irradiated at photon energies from 6 ÷ 12 eV, in the temperature range from 15 ÷ 300 K. The investigation was carried out by the methods of atomic absorption, luminescence and vacuum ultraviolet spectroscopy. Intrinsic emissions were found at 3.7-3.8 eV, 4.2-4.6 eV and 4.9-5 eV, and long-wavelength recombination emissions at 2.6-2.7 ...
      2023-12-05