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Eurasian Journal of Physics and Functional Materials最新文献

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Hyperfine structure S state of muonic helium atom μ介子氦原子的超精细结构S态
Eurasian Journal of Physics and Functional Materials Pub Date : 2021-09-22 DOI: 10.32523/ejpfm.2021050301
D. T. Aznabayev, A. K. Bekbaev, V. Korobov
{"title":"Hyperfine structure S state of muonic helium atom","authors":"D. T. Aznabayev, A. K. Bekbaev, V. Korobov","doi":"10.32523/ejpfm.2021050301","DOIUrl":"https://doi.org/10.32523/ejpfm.2021050301","url":null,"abstract":"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 values have 30-33 significant digits for S states","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44297377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of the radiation situation in the territory of the Saumalkol village, located near the mothballed uranium mine of the North Kazakhstan region 对位于北哈萨克斯坦地区封存铀矿附近的Saumalkol村境内的辐射情况进行评估
Eurasian Journal of Physics and Functional Materials Pub Date : 2021-09-22 DOI: 10.32523/ejpfm.2021050302
A. Nygymanova, K. Kuterbekov, M. Bakhtin, E. Karpenko, A. Kabyshev
{"title":"Assessment of the radiation situation in the territory of the Saumalkol village, located near the mothballed uranium mine of the North Kazakhstan region","authors":"A. Nygymanova, K. Kuterbekov, M. Bakhtin, E. Karpenko, A. Kabyshev","doi":"10.32523/ejpfm.2021050302","DOIUrl":"https://doi.org/10.32523/ejpfm.2021050302","url":null,"abstract":"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, the flux density of alpha and beta particles and the equivalent equilibrium volumetric activity of daughter products of 222Rn and 220Rn isotopes in residential premises were measured. Samples of soil, water and bottom sediments were taken for laboratory radio spectrometric and radiochemical analyzes. At all measurement points, geographic coordinates were determined using a satellite navigation device. On the territory of the abandoned mine and in some areas of the Saumalkol settlement, anomalous areas with a high value of gamma radiation power from 0.35 to 1.08 μSv/h were revealed. In the residential premises of the Saumalkol village, the equivalent equilibrium volumetric activity of daughter products of radon isotopes is up to 8 times higher than the norm (200 Bq/m3 ).","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47825917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Obtaining multilayer coatings by the detonation spraying method 爆震喷涂法获得多层涂层
Eurasian Journal of Physics and Functional Materials Pub Date : 2021-06-22 DOI: 10.32523/ejpfm.2021050208
D. Kakimzhanov, B. Rakhadilov, D. Buitkenov, L. Zhurerova, M. Rakhadilov, D. Yeskermessov
{"title":"Obtaining multilayer coatings by the detonation spraying method","authors":"D. Kakimzhanov, B. Rakhadilov, D. Buitkenov, L. Zhurerova, M. Rakhadilov, D. Yeskermessov","doi":"10.32523/ejpfm.2021050208","DOIUrl":"https://doi.org/10.32523/ejpfm.2021050208","url":null,"abstract":"This work were studied the effect of technological parameters of detonation spraying on the phase composition and tribological characteristics on the bases of NiCr and Al2O3 coatings. As well as there was obtained and investigated multilayer coating on the bases of NiCr/NiCr- Al2O3/Al2O3 . It was determined that during detonation spraying the phase composition of Al2O3 coatings strongly depends on the degree of filling the borehole with a gas mixture. The a - Al2O3 -phase content in the coatings increases when the degree of filling is 63% and 54%. Only one CrNi3 phase is observed on the diffractograms and only increase of reflex intensity (020) at barrel filling by 58% is observed by sputtering on the bases of NiCr coatings in different degrees of barrel filling. The results of the coating nanohardness study showed that the hardness of the Al2O3 coating increases depending on the content of a- Al2O3 in it. Al2O3 coating has the maximum nanohardness values and is 16.42 GPa at the borehole is filled to 63%. The nanohardness of NiCr coating has the maximum values at barrel filling by 58% and consisting of 8.02 GPa.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46334789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of structural and electronic properties of intercalated CrTiS2 compound by density functional theory 用密度泛函理论研究插层CrTiS2化合物的结构和电子性能
Eurasian Journal of Physics and Functional Materials Pub Date : 2021-06-22 DOI: 10.32523/ejpfm.2021050204
V. B. Parmar, A. Vora
{"title":"Study of structural and electronic properties of intercalated CrTiS2 compound by density functional theory","authors":"V. B. Parmar, A. Vora","doi":"10.32523/ejpfm.2021050204","DOIUrl":"https://doi.org/10.32523/ejpfm.2021050204","url":null,"abstract":"In the present paper, we report the structural optimization of intercalated CrTiS2 compound by using Density Functional Theory (DFT) with Generalized Gradient Approximation (GGA) through Quantum ESPRESSO code. All the computations are carried out by using an ultra-soft pseudopotential. The effect of charge transfer from guest 3d transition metal Cr-atom to self-intercalated compound TiS2 has been studied. In electronic properties, the energy band structure, total density of states (TDOS), partial density of states (PDOS) and Fermi surface have carried out. From the energy band structure, we conclude that the TiS2 -intercalated compound has a small bandgap while the doped compound with guest Cr-atom has metallic behavior as shown form its overlapped band structure.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47029514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Time-of-flight fission fragment spectrometer of the MAVR facility MAVR设施的飞行时间裂变碎片光谱仪
Eurasian Journal of Physics and Functional Materials Pub Date : 2021-06-22 DOI: 10.32523/ejpfm.2021050202
D. Aznabayev, S. Lukyanov, Zh. Zeinulla, T. Issatayev, V. Maslov, K. Mendibayev, E. V. Melnik, V. Smirnov, S. Stukalov, A. Shakhov
{"title":"Time-of-flight fission fragment spectrometer of the MAVR facility","authors":"D. Aznabayev, S. Lukyanov, Zh. Zeinulla, T. Issatayev, V. Maslov, K. Mendibayev, E. V. Melnik, V. Smirnov, S. Stukalov, A. Shakhov","doi":"10.32523/ejpfm.2021050202","DOIUrl":"https://doi.org/10.32523/ejpfm.2021050202","url":null,"abstract":"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 of measuring the spontaneous fission fragments velocities of 252Cf are described. In addition, the results of the measurement of fission fragments in the 48Ca+238U reaction are presented. In this case, two time-of-flight arms were used, with the help of it is planned to carry out correlation measurements of induced fission fragments of a complex system. The created system also makes it possible to carry out correlation (three particles) measurements of fission fragments with particles registered in the focal plane of the MAVR magnetic spectrometer. Another purpose of the described system is to register elastically scattered ions, which is used as a monitoring system for the quality and composition of the beam hitting on the target of the MAVR facility.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48852850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intrinsic emission and electron-hole trapping centers in crystals Li2SO4-Cu Li2SO4-Cu晶体的本征发射和电子空穴捕获中心
Eurasian Journal of Physics and Functional Materials Pub Date : 2021-06-22 DOI: 10.32523/ejpfm.2021050207
T. Nurakhmetov, Z. Salikhodzha, M. Dolomatov, B. Yussupbekova, A. Zhunusbekov, A. Kainarbay, D. Daurenbekov, B. Sadykova, K. Zhangylyssov, T. Alibay, D. Tolekov
{"title":"Intrinsic emission and electron-hole trapping centers in crystals Li2SO4-Cu","authors":"T. Nurakhmetov, Z. Salikhodzha, M. Dolomatov, B. Yussupbekova, A. Zhunusbekov, A. Kainarbay, D. Daurenbekov, B. Sadykova, K. Zhangylyssov, T. Alibay, D. Tolekov","doi":"10.32523/ejpfm.2021050207","DOIUrl":"https://doi.org/10.32523/ejpfm.2021050207","url":null,"abstract":"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-SO4--centers are formed during the trap of electrons by Cu+-centers and during localization of SO4--radicals in the form of localized hole centers.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44219436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Synthesis reactions of neutron-rich isotopes of light elements 轻元素富中子同位素的合成反应
Eurasian Journal of Physics and Functional Materials Pub Date : 2021-06-22 DOI: 10.32523/ejpfm.2021050201
Y. Penionzhkevich
{"title":"Synthesis reactions of neutron-rich isotopes of light elements","authors":"Y. Penionzhkevich","doi":"10.32523/ejpfm.2021050201","DOIUrl":"https://doi.org/10.32523/ejpfm.2021050201","url":null,"abstract":"One of the most complicated problems of experimental nuclear physics is the synthesis of exotic nuclei near the boundaries of stability. These nuclei, as a rule, are 10 or more neutrons away from stable nuclei, have a short lifetime (less than 1 ms) and low binding energy. All this determines special requirements to the choice of reactions for the synthesis of such nuclei and the method of their transportation and registration. Mainly, for the synthesis of exotic nuclei, reactions of fragmentation of the bombarding heavy ion, direct reactions of the types (p, d) , (d, p) , (d, n) , ( d , 3 He), etc., as well as reactions of fission and deep inelastic transfer are used.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42647187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of gamma radiation shielding efficiency by 0.5TeO2-(0.5-x)Bi2O3-xWO3 glasses 0.5TeO2-(0.5-x)Bi2O3-xWO3玻璃屏蔽γ辐射效率的研究
Eurasian Journal of Physics and Functional Materials Pub Date : 2021-06-22 DOI: 10.32523/ejpfm.2021050205
A. Temir, K. Zhumadilov, A. Kozlovskiy, A. Smagulova, D. Shlimas, A. Trukhanov
{"title":"Study of gamma radiation shielding efficiency by 0.5TeO2-(0.5-x)Bi2O3-xWO3 glasses","authors":"A. Temir, K. Zhumadilov, A. Kozlovskiy, A. Smagulova, D. Shlimas, A. Trukhanov","doi":"10.32523/ejpfm.2021050205","DOIUrl":"https://doi.org/10.32523/ejpfm.2021050205","url":null,"abstract":"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 phase analysis. Determination of the shielding efficiency, as well as the effect of Bi2O3 and WO3 content in the glass composition on the attenuation efficiency was carried out by evaluation of gamma radiation intensities from the 137Cs source, with a gamma ray energy of 661 keV. The evaluation was performed on parameters such as radiation protection efficiency, linear and mass attenuation coefficients, half-value layer and mean free path. During the studies, it was found that glasses of the following composition 0.5TeO2-0.1Bi2O3-0.4WO3 are most effective, which are 1.3-2 times higher than those of the composition 0.5TeO2-0.4Bi2O3-0.1WO3.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48540431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The influence of pulse-plasma treatment on the phase composition and hardness of Fe-TiB2-CrB2 coatings 脉冲等离子体处理对Fe-TiB2-CrB2镀层相组成和硬度的影响
Eurasian Journal of Physics and Functional Materials Pub Date : 2021-06-22 DOI: 10.32523/ejpfm.2021050209
A. Kengesbekov, B. Rakhadilov, Y. Tyurin, N. Magazov, M. Kylyshkanov, Zhuldyz Sagdoldina
{"title":"The influence of pulse-plasma treatment on the phase composition and hardness of Fe-TiB2-CrB2 coatings","authors":"A. Kengesbekov, B. Rakhadilov, Y. Tyurin, N. Magazov, M. Kylyshkanov, Zhuldyz Sagdoldina","doi":"10.32523/ejpfm.2021050209","DOIUrl":"https://doi.org/10.32523/ejpfm.2021050209","url":null,"abstract":"This work are presented the research results of pulse plasma treatment influence on the phase composition, hardness, roughness and element composition of coatings on the bases of Fe-TiB2-CrB2. The Fe-TiB2-CrB2 coating was deposited by detonation method. The following pulse-plasma treatment was used to modify the structure and properties of the surface layers of the sprayed coating. The results of mechanical experiments showed that the hardness of Fe-TiB2-CrB2 coating increased after the treatment. On the basis of the X-ray analysis, it has been established that the increase of coating hardness is connected with phase transformations in a surface layer, in particular, with formation of oxide phases and increase of carbide particles quantity.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42576742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The nature of intrinsic recombination emission in SrSO4 irradiated with ultraviolet photons 紫外光子辐照下SrSO4的本征复合发射性质
Eurasian Journal of Physics and Functional Materials Pub Date : 2021-06-22 DOI: 10.32523/ejpfm.2021050206
T. Nurakhmetov, Z. Salikhodzha, R. Bakhtizin, K. Zhangylyssov, A. Zhunusbekov, A. Kainarbay, D. Daurenbekov, Zh. Azmagambetova, B. Sadykova, B. Yussupbekova, T. Alibay, D. Tolekov, N. Tulebayeva, B. Adil
{"title":"The nature of intrinsic recombination emission in SrSO4 irradiated with ultraviolet photons","authors":"T. Nurakhmetov, Z. Salikhodzha, R. Bakhtizin, K. Zhangylyssov, A. Zhunusbekov, A. Kainarbay, D. Daurenbekov, Zh. Azmagambetova, B. Sadykova, B. Yussupbekova, T. Alibay, D. Tolekov, N. Tulebayeva, B. Adil","doi":"10.32523/ejpfm.2021050206","DOIUrl":"https://doi.org/10.32523/ejpfm.2021050206","url":null,"abstract":"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 eV and 2.9-3.0 eV.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 eV and 2.9-3.0 eV.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42111311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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