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Seriya 3: Fizika, Astronomiya最新文献

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Creation of the indirect-drive cryogenic target with the solid deuterium layer 创建带有固体氘层的间接驱动低温目标
Seriya 3: Fizika, Astronomiya Pub Date : 2024-03-05 DOI: 10.55959/msu0579-9392.79.2410401
E. Zarubina, M. A. Rogozhina, I. A. Chugrov
{"title":"Creation of the indirect-drive cryogenic target with the solid deuterium layer","authors":"E. Zarubina, M. A. Rogozhina, I. A. Chugrov","doi":"10.55959/msu0579-9392.79.2410401","DOIUrl":"https://doi.org/10.55959/msu0579-9392.79.2410401","url":null,"abstract":"An indirect-drive cryogenic target is necessary for research in the field of laser thermonuclear fusion at a\u0000megajoule energy level facility. Solid fuel layer in the target must meet high requirements: a roughness of the\u0000inner cryolayer surface must be less than 1 µm, deviations from the sphericity and the concentricity must\u0000be less than 1%. This paper describes the results of the research on meeting these requirements, notably,\u0000cryolayer formation and its characterization. Due to the slow crystallization method of the deuterium layer\u0000with its simultaneous heating by IR radiation it is possible to obtain deviations from the sphericity and the\u0000concentricity of the inner cryolayer surface within limits of 2%, the roughness — within limits of 20 mkm.\u0000Theoretical thermal calculations of the target construction are compared with experiment. The program\u0000system was developed using the optical shadow method which makes it possible to measure liquid fuel when\u0000filling the shell during the performance of the experiment, to perform the characterization of the solid cryogenic\u0000layer parameters, to evaluate characterization results robustness.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140263478","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
A MODEL FOR SURFACE NANORELIEF FORMATION UNDER GAS CLUSTER ION IRRADIATION 气簇离子辐照下的表面纳米剥离形成模型
Seriya 3: Fizika, Astronomiya Pub Date : 2024-03-05 DOI: 10.55959/su0579-9392.79.2410302
D.R. Bessmertniy, A. E. Ieshkin
{"title":"A MODEL FOR SURFACE NANORELIEF FORMATION UNDER GAS CLUSTER ION IRRADIATION","authors":"D.R. Bessmertniy, A. E. Ieshkin","doi":"10.55959/su0579-9392.79.2410302","DOIUrl":"https://doi.org/10.55959/su0579-9392.79.2410302","url":null,"abstract":"A model for the evolution of surface nanorelief under irradiation with gas cluster ions is proposed. The model is based on consideration of individual collisions of clusters with a surface. The amount of substance sputtered from the collision area and the e ciency of its redeposition onto other surface elements are determined. The performance of the model is shown when compared with experimental data. The stages of smoothing of a harmonic relief are studied. A new measure of the e ectiveness of surface smoothing is proposed.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"2 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140264113","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
DYNAMICS OF PLASMA IN A DUAL-FREQUENCY CAPACITIVE DISCHARGE IN AN AR/XE MIXTURE Ar/XE 混合物中双频电容放电的等离子体动力学
Seriya 3: Fizika, Astronomiya Pub Date : 2024-03-05 DOI: 10.55959/msu0579-9392.79.2410601
M. Bogdanova, D. Voloshin, A. Glotov, D. Lopaev, N. Sysoev, D. R. Shibanov
{"title":"DYNAMICS OF PLASMA IN A DUAL-FREQUENCY CAPACITIVE DISCHARGE IN AN AR/XE MIXTURE","authors":"M. Bogdanova, D. Voloshin, A. Glotov, D. Lopaev, N. Sysoev, D. R. Shibanov","doi":"10.55959/msu0579-9392.79.2410601","DOIUrl":"https://doi.org/10.55959/msu0579-9392.79.2410601","url":null,"abstract":"The spatiotemporal dynamics of the plasma of a symmetrical dual-frequency 81 MHz/1.76 MHz capacitive discharge under the in uence of a low-frequency eld of 1.76 MHz has been studied.Using the method of phase-resolved optical emission spectroscopy, the dynamics of the radiation intensity of argon and xenon in plasma was obtained.The electron energy distribution function at the center of the discharge was measured using a Langmuir probe and the electron density was measured using a microwave probe. The main result is the dynamics of the intensity ratios of the selected argon and xenon lines depending on di erent conditions: at pressures of 40, 200 and 400 mTorr, LF voltage amplitude of 100, 200 and 400 V, input power at 81 MHz of 3 W and 15 W. The dynamics of high-energy electrons is studied based on a two-temperature approximation of the electron energy distribution function.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"128 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140078639","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
MAGNETO-OPTICAL KERR SPECTROSCOPY OF (СD 3 AS 2)100-X (MNAS) X COMPOSITES (сd 3 as 2)100-x (mnas) x 复合材料的磁光克尔光谱学
Seriya 3: Fizika, Astronomiya Pub Date : 2024-03-05 DOI: 10.55959/msu0579-9392.79.2410506
E. Gansina, I. M. Pripechenkov, A. Granovsky, M. Jaloliddinzoda, M. H. Al-Onaizan, A. Ril, B. Aronzon, S. F. Marenkin
{"title":"MAGNETO-OPTICAL KERR SPECTROSCOPY OF (СD 3 AS 2)100-X (MNAS) X COMPOSITES","authors":"E. Gansina, I. M. Pripechenkov, A. Granovsky, M. Jaloliddinzoda, M. H. Al-Onaizan, A. Ril, B. Aronzon, S. F. Marenkin","doi":"10.55959/msu0579-9392.79.2410506","DOIUrl":"https://doi.org/10.55959/msu0579-9392.79.2410506","url":null,"abstract":"Composite Films (Сd3As2)100-X(MnAs)X on silicon and sitall substrates with a concentration of Mn 5.8-16.4 at.% were obtained by vacuum-thermal evaporation. The structural properties of the films were investigated by X-ray phase analysis and scanning electron microscopy. Magneto-optical properties were studied by the method of the equatorial Kerr e ect (EEC) in the energy range of 0.5-4.0 eV in magnetic elds with a strength of up to 3 kE at a temperature of 20-300 K. In the geometry of the equatorial Kerr effect, spectral, field and temperature dependences of the EEC are obtained. The analysis of experimental data showed that with a Mn content of more than 12.9 at.% of the films contain the α′′-phase of the topological Dirac semimetal Cd3As2 in the form of large granules, as well as ferromagnetic MNAs granules. The Curie temperature of lms depends on the Mn content in them and is less than the temperature of bulk samples ofMPas. When the Mp content in the lm is 5.8 at.% and 6.4 at.%, the magneto-optical response is not detected, which indicates the formation of a superparamagnetic state or a spin glass state at low concentrations of Mn. With a film content of Mn 9.9 at%. A signi cant change in magneto-optical spectra was detected, which indicates the formation of MNAs nanoclusters and partial dissolution of Mn in the Cd3As2 matrix.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"130 46","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140078871","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
CONDUCTIVITY OF HAFNIUM OXIDE LMS OBTAINED BY ELECTRON BEAM SPUTTERING 通过电子束溅射获得的氧化铪薄膜的电导率
Seriya 3: Fizika, Astronomiya Pub Date : 2024-03-05 DOI: 10.55959/msu0579-9392.79.2410505
I. Kuchumov, M. Martyshov, D. M. Zhigunov, A. S. Ilyin, A. Pavlikov, P. Forsh, P. K. Kashkarov
{"title":"CONDUCTIVITY OF HAFNIUM OXIDE LMS OBTAINED BY ELECTRON BEAM SPUTTERING","authors":"I. Kuchumov, M. Martyshov, D. M. Zhigunov, A. S. Ilyin, A. Pavlikov, P. Forsh, P. K. Kashkarov","doi":"10.55959/msu0579-9392.79.2410505","DOIUrl":"https://doi.org/10.55959/msu0579-9392.79.2410505","url":null,"abstract":"Films of hafnium oxide HfOx with a thickness of about 40 nm were obtained by electron beam sputtering at di erent oxygen ow rates in the chamber. The electrophysical properties of lms in air and vacuum were studied. It is shown that the temperature dependences of lm conductivity, measured in vacuum inthe temperature range from 20 to 180 ◦C, have an activation character with an activation energy of 0.82 ±0.02 eV. It has been suggested that charge transfer in the resulting lms is determined by the activation of electrons into the conduction band from the donor level associated with oxygen vacancies. It was found that the conductivity of lms in air changes greatly with varying oxygen ow, while in vacuum the conductivity is practically independent of the oxygen ow. This indicates signi cant di erences in the surface properties of lms obtained at di erent oxygen ows in the chamber during the deposition process.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"23 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140264801","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
Stresses in silicon dioxide films deposited from dielectric targets: results of atomistic modeling 电介质靶材沉积的二氧化硅薄膜中的应力：原子模型的结果
Seriya 3: Fizika, Astronomiya Pub Date : 2024-03-05 DOI: 10.55959/msu0579-9392.79.2410503
F.V. Grigorieva, V. Sulimov, A. V. Tikhonravov
{"title":"Stresses in silicon dioxide films deposited from dielectric targets: results of atomistic modeling","authors":"F.V. Grigorieva, V. Sulimov, A. V. Tikhonravov","doi":"10.55959/msu0579-9392.79.2410503","DOIUrl":"https://doi.org/10.55959/msu0579-9392.79.2410503","url":null,"abstract":"The previously proposed method of molecular dynamics simulation of the deposition of thin films from metal\u0000targets is adapted to the case of dielectric targets and applied to silicon dioxide films. The possibility of not\u0000only silicon atoms leaving the target, but also clusters with oxygen atoms was taken into account by adding\u0000O=Si=O molecules to the flow of deposited atoms. Atomistic film clusters were obtained by high-energy and\u0000low-energy deposition at different percentages of molecules in the flow of deposited atoms. The values of the\u0000stress tensor components are calculated. With high-energy deposition, compressive stresses are observed, with\u0000low-energy deposition, tensile stresses are observed. The absolute values of the diagonal components of the\u0000stress tensor increase with increasing proportion of molecules in the flow of deposited atoms.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"125 40","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140078825","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
Taking into account the distribution of the noise level along the wavelength during broadband control of the deposition process of optical coatings 在对光学涂层沉积过程进行宽带控制时考虑到沿波长的噪声级分布情况
Seriya 3: Fizika, Astronomiya Pub Date : 2024-03-05 DOI: 10.55959/msu0579-9392.79.2410101
A. N. Sharov, S. Sharapova, A. Tikhonravov, A. Yagola
{"title":"Taking into account the distribution of the noise level along the wavelength during broadband control of the deposition process of optical coatings","authors":"A. N. Sharov, S. Sharapova, A. Tikhonravov, A. Yagola","doi":"10.55959/msu0579-9392.79.2410101","DOIUrl":"https://doi.org/10.55959/msu0579-9392.79.2410101","url":null,"abstract":"The paper presents numerical results of simulations of the deposition process of a complex optical coating using\u0000broadband monitoring of this process in the case when the noise level in the measured transmittance coefficient\u0000has an uneven distribution along the wavelength. The influence on the accuracy of data control at the edges of\u0000the measured wavelength range, where the error in the transmittance coefficient is maximum, is investigated.\u0000It is shown that when a part of the data is removed at the edges of the range, the self-compensation coefficient\u0000of the deposition process errors almost does not change, while the average norm of the error vector of layer\u0000thicknesses significantly decreases. Thus, it is shown for the first time that taking into account the effect of\u0000self-compensation of errors in broadband control opens up the possibility of a reasonable choice of the optimal\u0000spectral range of optical control for practice.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"110 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140079202","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
PLASMON ENERGY LOSSES OF ELECTRONS IN MULTILAYER DIELECTRIC STRUCTURES 多层电介质结构中电子的等离子体能量损失
Seriya 3: Fizika, Astronomiya Pub Date : 2024-03-05 DOI: 10.55959/msu0579-9392.79.2410501
A. N. Vasilev
{"title":"PLASMON ENERGY LOSSES OF ELECTRONS IN MULTILAYER DIELECTRIC STRUCTURES","authors":"A. N. Vasilev","doi":"10.55959/msu0579-9392.79.2410501","DOIUrl":"https://doi.org/10.55959/msu0579-9392.79.2410501","url":null,"abstract":"The possibilities of engineering energy losses of electrons created in the cascade process of electron-electron\u0000scattering during the interaction of multilayer dielectric structures with ionizing radiation are considered.\u0000It is shown that the contribution of surface plasmons associated with layer boundaries to electron energy\u0000losses is significant only for nanometer layer thicknesses and increases with increasing electron energy. At the\u0000same time, surface states associated with longitudinal optical phonons in ionic crystals significantly change\u0000energy losses during electron thermalization and can lead to an increase in the efficiency and growth rate of\u0000scintillation in nanostructured systems.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"215 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140265336","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
MULTIBIT UPSETS OF ONBOARD SPACECRAFT ELECTRONICS FROM A SINGLE COSMIC RADIATION PARTICLE 单个宇宙辐射粒子对航天器机载电子设备的多比特干扰
Seriya 3: Fizika, Astronomiya Pub Date : 2024-03-05 DOI: 10.55959/msu0579-9392.79.2411001
N. Chechenin, N. Novikov, A. Shirokova
{"title":"MULTIBIT UPSETS OF ONBOARD SPACECRAFT ELECTRONICS FROM A SINGLE COSMIC RADIATION PARTICLE","authors":"N. Chechenin, N. Novikov, A. Shirokova","doi":"10.55959/msu0579-9392.79.2411001","DOIUrl":"https://doi.org/10.55959/msu0579-9392.79.2411001","url":null,"abstract":"The analysis of the e ect of high-energy protons of space radiation on the onboard electronics of the spacecraft is carried out. It is shown that protons can cause nuclear reactions with atomic nuclei of electronics material. The residual nuclei formed as a result of a nuclear reaction have su ciently high energy to cross the sensitive areas of several bits of electronics, and the high ionizing ability of nuclear fragments allows generating an excess charge of carriers exceeding the critical charge for the failure to occur simultaneously in several bits of the electronic device.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"60 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140264437","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
On blow-up and on global existence of weak solutions to Cauchy problem for some nonlinear equation of the pseudoparabolic type 关于某些伪抛物型非线性方程的考希问题弱解的吹胀和全局存在性
Seriya 3: Fizika, Astronomiya Pub Date : 2023-12-19 DOI: 10.55959/msu0579-9392.78.2360103
I. K. Katasheva, M. O. Korpusov, A. A. Panin
{"title":"On blow-up and on global existence of weak solutions to Cauchy problem for some nonlinear equation of the pseudoparabolic type","authors":"I. K. Katasheva, M. O. Korpusov, A. A. Panin","doi":"10.55959/msu0579-9392.78.2360103","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2360103","url":null,"abstract":"It is a brief exposition of results of the investigation of Cauchy problem for some nonlinear equation of pseudoparabolic type that is a generalisation of some model of semiconductor theory. In the paper, the potential theory for the linear part of the equation is elaborated, which demanded quite intricate technique, which can be used in other equations. The properties of the fundamental solution of this linear part are also of interest, because of the singularity of its 1st time derivative. This is not usual for this type of equations. Also, we obtain sufficiant conditions of solvability and of finite-time blow-up.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"101 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139171484","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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