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Radiation Hardness of Subterahertz Radiation Source Based on Heterodyne on Gunn Diode Generator and Superlattice Multiplier 基于贡恩二极管发生器和超晶格乘法器的异频超赫兹辐射源的辐射硬度
IF 0.7 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-02 DOI: 10.1134/s1063784224010195
A. S. Ivanov, D. G. Pavelyev, S. V. Obolensky, E. S. Obolenskaya
{"title":"Radiation Hardness of Subterahertz Radiation Source Based on Heterodyne on Gunn Diode Generator and Superlattice Multiplier","authors":"A. S. Ivanov, D. G. Pavelyev, S. V. Obolensky, E. S. Obolenskaya","doi":"10.1134/s1063784224010195","DOIUrl":"https://doi.org/10.1134/s1063784224010195","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The radiation resistance to gamma irradiation of various dose levels (0.5, 2, 10 kGy) of a subterahertz radiation source from a heterodyne on a Gunn diode and a GaAs/AlAs semiconductor superlattice multiplier was estimated. A measuring chamber for studying the radiation resistance of Gunn diodes has been developed and manufactured. The dependence of the output power on the frequency of a sub-terahertz radiation source before and after irradiation was evaluated analytically.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nonreciprocity of Microwave Propagation in the [(CoFe)/Cu]/(Glass) System 微波在[(CoFe)/Cu]/(玻璃)系统中传播的非互惠性
IF 0.7 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-02 DOI: 10.1134/s1063784224010328
A. B. Rinkevich, D. V. Perov, M. A. Milyaev, E. A. Kuznetsov
{"title":"Nonreciprocity of Microwave Propagation in the [(CoFe)/Cu]/(Glass) System","authors":"A. B. Rinkevich, D. V. Perov, M. A. Milyaev, E. A. Kuznetsov","doi":"10.1134/s1063784224010328","DOIUrl":"https://doi.org/10.1134/s1063784224010328","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The propagation of microwaves through the dielectric substrate/metal superlattice system [(CoFe)/Cu] has been investigated. The frequency dependences of transmission and reflection coefficients for the normal incidence of electromagnetic waves on the system in two opposite directions are measured. The effect of the substrate thickness on the magnitude of the microwave giant magnetoresistance effect during reflection and on nonreciprocity in the system is investigated. The influence of an external magnetic field on the nonreciprocity parameter is investigated. It has been established that under the conditions of nonreciprocity, the microwave giant magnetoresistance effect increases significantly when the wave is reflected.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evolution of Structure of AlCoCrFeNi High-Entropy Alloy on Irradiation by Pulsed Electron Beam 脉冲电子束辐照下的铝钴铬铁镍高熵合金结构演变
IF 0.7 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-02 DOI: 10.1134/s1063784224010201
Yu. F. Ivanov, V. E. Gromov, S. V. Konovalov, Y. A. Shliarova
{"title":"Evolution of Structure of AlCoCrFeNi High-Entropy Alloy on Irradiation by Pulsed Electron Beam","authors":"Yu. F. Ivanov, V. E. Gromov, S. V. Konovalov, Y. A. Shliarova","doi":"10.1134/s1063784224010201","DOIUrl":"https://doi.org/10.1134/s1063784224010201","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>By the metho ds of modern physical materials science the change in structural-phase state of AlCoCrFeNi high-entropy alloy (HEA) of nonequiatomic composition obtained by the metho ds of wire arc additive technology (WAAM) after irradiation by electron beams with energy density of 10–30 J/cm<sup>2</sup>, durality of 50 µs, frequency 0.3 s<sup>–1</sup> is studied. In the initial state the alloy had a dendritic structure indicating the inhomogeneous distribution of elements. It is shown that electron beam processing forms the structure of high-velocity cellular crystallization with cell size of 100–200 nm, along boundaries of which the nano dimensional (15–30 nm) inclusions of the second phase enriched in Cr and Fe atoms are located.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of Mass Separators 质量分离器的优化
IF 0.7 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-02 DOI: 10.1134/s1063784224010250
V. V. Lukashevich
{"title":"Optimization of Mass Separators","authors":"V. V. Lukashevich","doi":"10.1134/s1063784224010250","DOIUrl":"https://doi.org/10.1134/s1063784224010250","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The optimization of separator masses in this paper is based on the realization of the linearity of the system under study and the consequences of Liouville’s theorem. The properties of several mass separators with an ion energy of 30 keV and a beam emittance of 4 mm mrad are considered. Focusing is provided by an aberration-free lens and a magnetic corrector. Phase diagrams along the beam path are in the form of parallelograms, which indicates the absence of geometric aberrations. For each of the separators, the resolution calculated in the linear approximation coincides with the simulation results. It is shown that a mass separator based on a magnet with a rotation angle of 54.7° has a resolution of about 5000, and a separator based on two magnets with a rotation angle of 45° and 90°, respectively, has a resolution of 14 000–15 000.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of the GIXRD Technique to Investigation of Damaged Layers in NaNd(WO4)2 and NaNd(MoO4)2 Ceramics Irradiated with High-Energy Ions 应用 GIXRD 技术研究高能离子辐照下 NaNd(WO4)2 和 NaNd(MoO4)2 陶瓷中的损伤层
IF 0.7 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-02 DOI: 10.1134/s1063784224010432
P. A. Yunin, A. A. Nazarov, E. A. Potanina
{"title":"Application of the GIXRD Technique to Investigation of Damaged Layers in NaNd(WO4)2 and NaNd(MoO4)2 Ceramics Irradiated with High-Energy Ions","authors":"P. A. Yunin, A. A. Nazarov, E. A. Potanina","doi":"10.1134/s1063784224010432","DOIUrl":"https://doi.org/10.1134/s1063784224010432","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The technique of grazing incidence X-ray diffractometry (GIXRD) was used to study damaged layers in NaNd(WO<sub>4</sub>)<sub>2</sub> and NaNd(MoO<sub>4</sub>)<sub>2</sub> ceramics irradiated with high-energy ions. The possibilities and applicability limits of the technique for the analysis of such samples are shown. Estimates of the degree of amorphization in near-surface layers of ceramics are given depending on the irradiation dose. The higher resistance of NaNd(MoO<sub>4</sub>)<sub>2</sub> ceramics to external radiation exposure as compared to NaNd(WO<sub>4</sub>)<sub>2</sub> has been demonstrated.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Residual Stresses at the Interface between Carrier Tape and YSZ Layer in Manufacture of 2G HTS Wires 制造 2G HTS 导线时载体带和 YSZ 层界面的残余应力
IF 0.7 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-02 DOI: 10.1134/s1063784224010183
A. V. Irodova, E. A. Golovkova, O. A. Kondratiev, V. S. Kruglov, V. E. Krylov, S. A. Tikhomirov, S. V. Shavkin
{"title":"Residual Stresses at the Interface between Carrier Tape and YSZ Layer in Manufacture of 2G HTS Wires","authors":"A. V. Irodova, E. A. Golovkova, O. A. Kondratiev, V. S. Kruglov, V. E. Krylov, S. A. Tikhomirov, S. V. Shavkin","doi":"10.1134/s1063784224010183","DOIUrl":"https://doi.org/10.1134/s1063784224010183","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Using X-ray diffraction, there were determined the residual stresses on the surface of the AISI 310S stainless steel carrier tape used in manufacture of the second generation high temperature superconducting (2G HTS) wires at the National Research Center “Kurchatov Institute,” from delivery to deposition of the main buffer layer YSZ between the tape and the superconducting layer, and the residual stress in the buffer layer YSZ itself. The compressive stress of –0<i>.</i>8 GPa induced by rolling was found on the surface of the tape as-delivered. During processing, it varies from –0<i>.</i>5 to –1<i>.</i>1 GPa. At each stage, its depth distribution was found down to 10 μm, and the residual stresses caused by processing were determined. The residual stress in the YSZ layer deposited using the ABAD technology is compressive and amounts to –3<i>.</i>29 GPa. The layer has a defective single-crystal structure in type to radiation swelling with the unstressed lattice period of 5.1820 Å, 0.9% larger than in ordinary crystal. The results obtained are in agreement with the data of the earlier neutron diffraction study of residual stresses inside the carrier tape.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Geo-Referencing Images of Wide-Angle Optical Systems 广角光学系统的地理参照图像
IF 0.7 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-02 DOI: 10.1134/s1063784224010407
T. E. Syrenova, A. B. Beletsky, R. V. Vasilyev
{"title":"Geo-Referencing Images of Wide-Angle Optical Systems","authors":"T. E. Syrenova, A. B. Beletsky, R. V. Vasilyev","doi":"10.1134/s1063784224010407","DOIUrl":"https://doi.org/10.1134/s1063784224010407","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A technique is described for referecing images of wide-angle optical systems intended for registration own radiation of the Earth’s atmosphere, to geographic coordinates. The technique is based on an automatic procedure for the stars emphasing and identification in the frames and subsequent georeferencing. An example of the technique use for calculating the characteristics of a long-lived meteor trail based on observation data of two spatially separated wide-angle optical systems is shown.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Shock-Wave Polymorphic Transition in Porous Graphite 多孔石墨中的冲击波多态转变
IF 0.7 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-02 DOI: 10.1134/s1063784224010213
S. A. Kinelovskii
{"title":"Shock-Wave Polymorphic Transition in Porous Graphite","authors":"S. A. Kinelovskii","doi":"10.1134/s1063784224010213","DOIUrl":"https://doi.org/10.1134/s1063784224010213","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>For the polymorphic transformation of porous graphite in the shock, the previously proposed model linking the process of graphite phase transition with a change in the elastic energy of a substance has been tested. It is shown that the model plausibly describes the experimental results outside the transition zone in a fairly wide range of changes in the porosity of samples with their different initial structure. It is discussed how the model under consideration changes the currently existing ideas about the thermodynamics of the polymorphic transition of matter in a shock wave.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ion-Beam Lithography: Modelling and Analytical Description of the Deposited in Resist Energy 离子束光刻技术：电阻能量沉积的建模和分析描述
IF 0.7 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-02 DOI: 10.1134/s1063784224010353
Ya. L. Shabelnikova, S. I. Zaitsev
{"title":"Ion-Beam Lithography: Modelling and Analytical Description of the Deposited in Resist Energy","authors":"Ya. L. Shabelnikova, S. I. Zaitsev","doi":"10.1134/s1063784224010353","DOIUrl":"https://doi.org/10.1134/s1063784224010353","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The energy deposited in resist during its exposure by ion beam was simulated for ions from a set of rare gases and for gallium. It was shown that the distribution of energy density can be approximated by the product of two Gaussian functions. One of them describes the lateral distribution of energy, the second the dependence on depth. The widths and centres of these Gaussian functions are determined by the energy length (also mentioned in the literature as “Range” or “mean length of trajectories”), the mass of ions and the average atomic number of resist. The obtained description would make it possible to estimate the size of the resist modified volume for any type of ion with energy of tens kiloelectronvolts. So it can be used for a priori estimates of resolution and performance, as well as for the choice of beam energy and ion type based on this.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Question of Levitation 关于悬浮问题
IF 0.7 4区 物理与天体物理
Technical Physics Pub Date : 2024-08-30 DOI: 10.1134/s1063784224700634
S. O. Gladkov
{"title":"On the Question of Levitation","authors":"S. O. Gladkov","doi":"10.1134/s1063784224700634","DOIUrl":"https://doi.org/10.1134/s1063784224700634","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>It is shown using the Einstein equations with account for the energy–momentum tensor of the electromagnetic field on the right-hand side of these equations, apart from the mass tensor, that the situation when the weightlessness effect (or levitation in the generally accepted terminology) is possible. In this article, detailed physical considerations concerning the qualitative analysis of the possible effect of electromagnetic fields on the metric properties of the spatiotemporal continuum are presented. The discussion of this question is necessitated primarily by the fact that the formal introduction of any (not only gravitational) types of energy–momentum suggests that these factors also affect the metric properties of space–time. The fractal dependence of the mass of baryons on their lifetime, which is an important factor in the prediction of other types of baryons, is also considered. The value of the electric field for which the levitation effect can exist is given.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142216381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","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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