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High-speed molybdenum steel: phase composition and thermodynamic and mechanical properties 高速钼钢：相组成及热力学和力学性能
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-02-21 DOI: 10.1007/s11182-025-03397-0
A. I. Potekaev, V. E. Gromov, Yu. F. Ivanov, A. A. Klopotov, Yu. A. Abzaev, A. B. Yuriev, Yu. A. Shlyarova, V. V. Kulagina
{"title":"High-speed molybdenum steel: phase composition and thermodynamic and mechanical properties","authors":"A. I. Potekaev,&nbsp;V. E. Gromov,&nbsp;Yu. F. Ivanov,&nbsp;A. A. Klopotov,&nbsp;Yu. A. Abzaev,&nbsp;A. B. Yuriev,&nbsp;Yu. A. Shlyarova,&nbsp;V. V. Kulagina","doi":"10.1007/s11182-025-03397-0","DOIUrl":"10.1007/s11182-025-03397-0","url":null,"abstract":"<div><p>The structural-phase states and elemental composition of a layer of M10 steel surfaced on medium-carbon CSN 14331 steel are studied. The surfaced layer represents a multiphase material containing Fe-based solid solution and inclusions of the carbide and intermetallic phases. The mixing entropy is evaluated and the surfaced layer material is shown to belong to medium-entropy alloys. Using MATLAB and the crystallochemical database, the variations of thermodynamic and elastic properties are calculated in the temperature range up to 1600 °C for a model high-speed steel, 72.2 Fe – 12 Mo – 5 Co – 5 Cr – 5 V – 0.8 C, whose composition is close to that of M10 steel.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 1","pages":"33 - 40"},"PeriodicalIF":0.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818065","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
Sequential excitation of two S-band corrugated transmission lines with saturated ferrite by one high-voltage pulse 含饱和铁氧体的s波段波纹输电线路的一个高压脉冲序贯激励
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-02-21 DOI: 10.1007/s11182-025-03390-7
V. Yu. Konev, P. V. Priputnev, R. K. Sobyanin, I. V. Romanchenko, P. V. Vykhodtsev
{"title":"Sequential excitation of two S-band corrugated transmission lines with saturated ferrite by one high-voltage pulse","authors":"V. Yu. Konev,&nbsp;P. V. Priputnev,&nbsp;R. K. Sobyanin,&nbsp;I. V. Romanchenko,&nbsp;P. V. Vykhodtsev","doi":"10.1007/s11182-025-03390-7","DOIUrl":"10.1007/s11182-025-03390-7","url":null,"abstract":"<div><p>Sequential excitation of two nonlinear transmission lines with saturated ferrite by one high-voltage pulse has been implemented. The central frequencies of the high-frequency pulses of each line were approximately 3 and 4 GHz. It is shown that this method of excitation of oscillations allows implementing a sequence of radio pulses with a repetition frequency of tens of MHz as well as increasing the energy efficiency of high-frequency pulse generation in the specified frequency ranges.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 12","pages":"2391 - 2396"},"PeriodicalIF":0.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612098","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
Modified gravity: the game of theories? 修正引力：理论博弈？
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-02-21 DOI: 10.1007/s11182-025-03408-0
S. D. Odintsov
{"title":"Modified gravity: the game of theories?","authors":"S. D. Odintsov","doi":"10.1007/s11182-025-03408-0","DOIUrl":"10.1007/s11182-025-03408-0","url":null,"abstract":"<div><p>This mini-review is devoted to the memory of Professor Vladislav Gavrilovich Bagrov, the outstanding Russian physicist, who was especially dedicated to mathematical physics. Amazingly, he heard the music of differential equations obtained from field equations. I belong to the school of theoretical physics created by Prof. Bagrov in Tomsk, where he was my first teacher in mathematical physics and PhD thesis director. In this review, I briefly discuss several popular models of modified gravity in relation with observational data. Note that reasonable modified gravities lead to extremely complicated field equations, which solution can be a real challenge for Prof. Bagrov and his pupils. This is an attempt to look over the horizon in order to understand which final theory may better describe the universe evolution history so that to be the best candidate for understanding gravitational physics and the universe history.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 1","pages":"108 - 112"},"PeriodicalIF":0.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818067","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
Automated fiber-optic security system to protect perimeters of various facilities from unauthorized access 自动光纤安全系统，保护各种设施的周边不受未经授权的访问
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-02-21 DOI: 10.1007/s11182-025-03415-1
A. A. Kovtun, R. A. Mekhtiyev, A. V. Yurchenko
{"title":"Automated fiber-optic security system to protect perimeters of various facilities from unauthorized access","authors":"A. A. Kovtun,&nbsp;R. A. Mekhtiyev,&nbsp;A. V. Yurchenko","doi":"10.1007/s11182-025-03415-1","DOIUrl":"10.1007/s11182-025-03415-1","url":null,"abstract":"<div><p>The article discusses an automated fiber-optic security system (FOSS) designed to protect perimeters of objects from unauthorized access. The system utilizes multi-channel CMOS (Complementary Metal Oxide Semiconductor) image sensors to record changes in the light spot, which makes it possible to detect vibration effects on an optical fiber with high sensitivity. The paper presents the development technique and test results for the laboratory sample, which show its operability and prospects for commercialization. The FOSS has the potential to replace outdated systems based on electrical signals, protecting them from electromagnetic interference and is highly accurate in climatic conditions of Kazakhstan.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 1","pages":"164 - 169"},"PeriodicalIF":0.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818066","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
Output characteristics of photoconductive semiconductor switches at reduced resistive and short-circuit switching 降低电阻和短路开关时光导半导体开关的输出特性
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-02-21 DOI: 10.1007/s11182-025-03414-2
V. V. Barmin, I. V. Romanchenko
{"title":"Output characteristics of photoconductive semiconductor switches at reduced resistive and short-circuit switching","authors":"V. V. Barmin,&nbsp;I. V. Romanchenko","doi":"10.1007/s11182-025-03414-2","DOIUrl":"10.1007/s11182-025-03414-2","url":null,"abstract":"<div><p>The paper determines output characteristics of a photoconductive semiconductor switch with high gain and maximum pulse operating voltage of 32 kV at a load of 50, 25, 4.3 Ω and 42 mΩ at a 10 kV charge voltage when exposed to laser radiation with a wavelength of 355 nm and 25 µJ optical energy. The switch is irradiated with the laser beam with autograph in the form of an elongated ellipse ~300 µm wide and 14 mm long. The resulting output pulses are 56, 71, 106 A at a load of 50, 24.8, and 4.3 Ω, respectively. At these values, the current and resistance parameters change similarly to those observed at the coaxial line discharge to the load. In the case of switching to a 42 mΩ resistor or to a short-circuited section of coaxial line, a received bipolar signal matches the discharge duration of the forming line that strengthens the potential for switch application in a microwave compressor.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 1","pages":"157 - 163"},"PeriodicalIF":0.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818068","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
Thermodynamic modeling of the C50–N2 system C50-N2体系的热力学模型
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-02-18 DOI: 10.1007/s11182-025-03406-2
N. M. Barbin, L. V. Yakupova, D. I. Terent’ev, V. T. Kuanyshev, A. I. Burumbaev, D. I. Burumbaev
{"title":"Thermodynamic modeling of the C50–N2 system","authors":"N. M. Barbin,&nbsp;L. V. Yakupova,&nbsp;D. I. Terent’ev,&nbsp;V. T. Kuanyshev,&nbsp;A. I. Burumbaev,&nbsp;D. I. Burumbaev","doi":"10.1007/s11182-025-03406-2","DOIUrl":"10.1007/s11182-025-03406-2","url":null,"abstract":"<div><p>The behavior of carbon nanoparticles C<sub>50</sub> heated in a nitrogen atmosphere at a pressure of 0.1 MPa is studied using the method of computer thermodynamic modeling. The simulation consists in a complete thermodynamic analysis of the system using the TERRA software package. The temperature range of the experiment is from 273 K to 3373 K. A graph of the carbon balance in the C<sub>50</sub>–N<sub>2</sub> system is constructed, and the ongoing physico-chemical processes, divided into four classes, are described. The equilibrium constants of the reactions with an isolation of the temperature intervals are calculated.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 1","pages":"97 - 101"},"PeriodicalIF":0.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818241","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
Certification of VMM3a integrated circuits for spin physics detector at the NICA collider 用于 NICA 对撞机自旋物理探测器的 VMM3a 集成电路认证
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-02-18 DOI: 10.1007/s11182-025-03389-0
O. Kuchinskaia, V. Kostyukhin, V. Borsch, I. Akimov, R. Makhmanazarov, I. Shreyber, S. Filimonov, D. Dedovich, N. Koviazina, I. Liashko
{"title":"Certification of VMM3a integrated circuits for spin physics detector at the NICA collider","authors":"O. Kuchinskaia,&nbsp;V. Kostyukhin,&nbsp;V. Borsch,&nbsp;I. Akimov,&nbsp;R. Makhmanazarov,&nbsp;I. Shreyber,&nbsp;S. Filimonov,&nbsp;D. Dedovich,&nbsp;N. Koviazina,&nbsp;I. Liashko","doi":"10.1007/s11182-025-03389-0","DOIUrl":"10.1007/s11182-025-03389-0","url":null,"abstract":"<div><p>The paper presents testing results and certification of VMM3a integrated circuits, which are planned to be used in the data acquisition system in the spin physics detector experiment on the NICA collider. The key parameters of the circuits evaluated during testing, include the power consumption, amplitude and time measurement accuracy, response correctness in various operating modes. The obtained results are used to identify circuits matching the experimental conditions and units with defects.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 12","pages":"2383 - 2390"},"PeriodicalIF":0.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612093","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 role of magnetization and dielectric polarization currents in the excitation of high-frequency oscillations in a gyromagnetic transmission line: numerical modeling 磁化和介电极化电流在旋磁传输线高频振荡激励中的作用：数值模拟
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-02-14 DOI: 10.1007/s11182-025-03410-6
O. O. Mutylin, I. V. Pegel
{"title":"On the role of magnetization and dielectric polarization currents in the excitation of high-frequency oscillations in a gyromagnetic transmission line: numerical modeling","authors":"O. O. Mutylin,&nbsp;I. V. Pegel","doi":"10.1007/s11182-025-03410-6","DOIUrl":"10.1007/s11182-025-03410-6","url":null,"abstract":"<div><p>The formation of a high-frequency electromagnetic pulse in a transmission line, partially filled with saturated ferrite surrounded by insulating dielectric, fed with a nanosecond-risetime high-voltage pulse, is studied in a numerical experiment based on solving the Landau–Lifshitz equation along with Maxwell’s equations. The ferrite dielectric properties are taken into account in a constant-permittivity approximation. An analysis of the energy exchange of the electromagnetic wave with the magnetization and dielectric polarization currents in the ferrite demonstrates that the energy is primarily transferred through the magnetization current wave. The role of the dielectric permittivity of the gyromagnetic medium, which is much higher than that of the surrounding dielectric, consists mainly in slowing down the wave, ensuring an effective excitation of gyromagnetic precession at the pulse front and its steepening.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 1","pages":"122 - 131"},"PeriodicalIF":0.4,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818198","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
Terahertz radiation modes in Cherenkov generator with single-section slow-wave structure 单段慢波切伦科夫发生器的太赫兹辐射模式
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-02-14 DOI: 10.1007/s11182-025-03417-z
V. I. Koshelev, V. A. Chazov, A. A. Petkun
{"title":"Terahertz radiation modes in Cherenkov generator with single-section slow-wave structure","authors":"V. I. Koshelev,&nbsp;V. A. Chazov,&nbsp;A. A. Petkun","doi":"10.1007/s11182-025-03417-z","DOIUrl":"10.1007/s11182-025-03417-z","url":null,"abstract":"<div><p>The paper studies the interaction between the relativistic electron beam and electromagnetic resonances in the Cherenkov generator with the single-section slow-wave structure using the 2.5D hybrid particle-in-cell code. In numerical simulation, the tubular beam current of ≤ 25 kA and ≤ 490 keV energy are used to inject the electron beam into a homogeneous slow-wave structure of a diameter 40 mm with and without a diffraction reflector. The frequency range is 362 to 367 GHz. Parameter ranges are obtained for the stable radiation generation with synchronization of electromagnetic resonances by the electron beam and self-modulation of radiation power. With the diffraction reflector, the total power of stable radiation is 400 MW with the forward radiation power of 90%, regardless of power ohmic losses. Resonance magnification modes are detected for the radiation power in the narrow range of the electron energy, which match the radiation frequency near the third-order electromagnetic resonance with no electron beam.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 1","pages":"177 - 187"},"PeriodicalIF":0.4,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818199","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
Influence of poisson’s ratio of material on initial velocity recovery factor in Taylor impact test 泰勒冲击试验中材料泊松比对初速度恢复系数的影响
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-02-13 DOI: 10.1007/s11182-025-03407-1
E. V. Tuch
{"title":"Influence of poisson’s ratio of material on initial velocity recovery factor in Taylor impact test","authors":"E. V. Tuch","doi":"10.1007/s11182-025-03407-1","DOIUrl":"10.1007/s11182-025-03407-1","url":null,"abstract":"<div><p>The paper presents numerical simulation results of elastic deformation of cylindrical bodies during the dynamic impact against a rigid wall. Dependences are suggested for the recovery factor of the striker initial velocity and Poisson’s ratio of different materials. This recovery factor is defined as the energy expenditure of striking elements on strain potential energy which depends on Poisson’s ratio. The finite element method (FEM) is used to simulate an impact of plates, cylinders of a compact shape and thin cylinders against a rigid wall. Two series of calculations are carried out for different materials to study the influence of Poisson’s ratio on cylinder deformation. In the first series, the cylinder material is isotropic, while in the second, it is anisotropic auxetic with different orientations of symmetry axes relative to the loading axis. Tetrahedronal elements are used in FEM to simulate deformation. It is found that the higher Poisson’s ratio of the cylinder material, the more kinetic energy converts to potential energy.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 1","pages":"102 - 107"},"PeriodicalIF":0.4,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143818145","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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