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A computer study to simulate a magnetic objective lens and analyze the effect of the distance between pole pieces on its focal properties 用计算机模拟磁物镜，分析了磁极片间距对其焦距特性的影响
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-05-28 DOI: 10.1007/s11182-025-03478-0
Mohammed Abdullah Hussein
{"title":"A computer study to simulate a magnetic objective lens and analyze the effect of the distance between pole pieces on its focal properties","authors":"Mohammed Abdullah Hussein","doi":"10.1007/s11182-025-03478-0","DOIUrl":"10.1007/s11182-025-03478-0","url":null,"abstract":"<div><p>In this research, a magnetic objective lens has been developed and its optical properties have been analyzed using simulation programs based on the finite element method. The optical properties are significantly improved, and low values of electron probe diameter on the sample surface are obtained together with spherical, chromatic, diffraction, and Gaussian aberrations and an optimal aperture angle. A double-pole symmetrical magnetic lens was designed and showed excellent optical properties. The effect of varying distances <i>S </i>between the electrode pieces (<i>S</i> = 2, 4, 6, 8 mm) on the performance of the magnetic lens was studied in order to determine its best design. The results showed that when constant excitation <i>NI</i> = 1 kA‑t and acceleration voltage <i>Vr</i> = 10 kV were applied, the distance <i>S</i> = 2 mm was optimal, where good optical properties were achieved: focal length <i>fo</i> = 4.04 mm, spherical aberration <i>Cs</i> = 3.75 mm, and chromatic aberration <i>Cc</i> = 3.12 mm. The largest axial magnetic flux <i>Bz</i> = 0.18 T was also reached. The effect of the electronic probe diameter as a function of the aperture angle was studied, showing that an aperture angle of 2 mrad significantly improved the optical properties to obtain <i>dp</i> = 12.24 mm, <i>ds</i> = 5.64 mm, <i>dc</i> = 0.0005 mm, <i>dd</i> = 4.06 mm, and <i>dg</i> = 10.06 mm. The lense with <i>S</i> = 2 mm was selected as the best design, and its optical properties were examined in more detail.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 4","pages":"651 - 657"},"PeriodicalIF":0.4,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170462","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
Radiation of a sequence of high-power S-band microwave pulses by a system of two gyromagnetic lines with saturated ferrite in a scheme with repeated use of a high-voltage pulse 在高压脉冲重复使用的方案中，由饱和铁氧体的两条陀螺磁力线组成的系统辐射一系列高功率s波段微波脉冲
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-05-28 DOI: 10.1007/s11182-025-03476-2
V. Yu. Konev, P. V. Priputnev, R. K. Sobyanin, I. V. Romanchenko, P. V. Vykhodsev
{"title":"Radiation of a sequence of high-power S-band microwave pulses by a system of two gyromagnetic lines with saturated ferrite in a scheme with repeated use of a high-voltage pulse","authors":"V. Yu. Konev,&nbsp;P. V. Priputnev,&nbsp;R. K. Sobyanin,&nbsp;I. V. Romanchenko,&nbsp;P. V. Vykhodsev","doi":"10.1007/s11182-025-03476-2","DOIUrl":"10.1007/s11182-025-03476-2","url":null,"abstract":"<div><p>The results of the development of a microwave oscillation generation technology using gyromagnetic lines with saturated ferrite are presented. A sequence of two pulses of microwave oscillation of different frequencies in the S‑band is radiated into an open space using two nonlinear transmission lines with saturated ferrite connected in series and excited by a single high-voltage pulse. The central conductors of the lines represent corrugated structures with periodically arranged rings of magnets and ferrites. The pulses are radiated by various types of broadband antennas. It is shown that for the effective emission of microwave oscillations excited by such a structure, a magnetic electric dipole will be an optimal radiating antenna choice. The repetition rate of the pulses emitted with this dipole is found to be 20 MHz.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 4","pages":"639 - 644"},"PeriodicalIF":0.4,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170475","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
Thermooptical laser generation of sound in the atmosphere. Optoacoustic sensing system “Eva” 热光学激光在大气中产生声音。光声传感系统“Eva”
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-05-21 DOI: 10.1007/s11182-025-03457-5
A. I. Potekaev, N. P. Krasnenko, L. G. Shamanaeva
{"title":"Thermooptical laser generation of sound in the atmosphere. Optoacoustic sensing system “Eva”","authors":"A. I. Potekaev,&nbsp;N. P. Krasnenko,&nbsp;L. G. Shamanaeva","doi":"10.1007/s11182-025-03457-5","DOIUrl":"10.1007/s11182-025-03457-5","url":null,"abstract":"<div><p>A systematic approach to the study of thermooptical laser generation of sound pulses in the atmosphere, including theoretical background, experimental investigation, verification of obtained experimental results, and its practical application is presented. The proposed approach is being developed at the Tomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences; moreover, it has not only been tested, but also has been implemented in the optoacoustic sensing system “Eva” intended for optoacoustic remote sensing of the spatial and energetic parameters of high-power laser beams propagating in the under breakdown mode in the atmosphere, including the effective beam radius, divergence angle, laser radiation absorption coefficient, total laser energy per pulse, laser energy density, and integral transmission of pulsed laser radiation on atmospheric paths. A comparison of the results of optoacoustic sensing with bolometric data showed their good agreement.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"500 - 509"},"PeriodicalIF":0.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144350","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
Microhardness of Ti-Al powder mixture depending on the duration of high-energy ball milling Ti-Al粉末混合物的显微硬度取决于高能球磨的持续时间
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-05-21 DOI: 10.1007/s11182-025-03465-5
D. A. Osipov, V. D. Pasko, I. A. Ditenberg
{"title":"Microhardness of Ti-Al powder mixture depending on the duration of high-energy ball milling","authors":"D. A. Osipov,&nbsp;V. D. Pasko,&nbsp;I. A. Ditenberg","doi":"10.1007/s11182-025-03465-5","DOIUrl":"10.1007/s11182-025-03465-5","url":null,"abstract":"<div><p>It is found out that the microhardness of a 3Ti–1.15Al powder mixture increases from 2.97 to 4.66 GPa with the duration of high-energy ball milling increasing from 1.5 to 7.5 min. During the formation of a nanostructured state, the ordered Ti<sub>3</sub>Al and TiAl compounds are observed to form, whose volume fractions increase with the processing duration. These peculiarities of the structural-phase transformation of the powder mixture are the main drivers of an increased microhardness under the processing conditions.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 4","pages":"559 - 562"},"PeriodicalIF":0.4,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168008","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 UV radiation intensity on silver nanoparticle synthesis by cavitation-diffusion photochemical reduction 紫外辐射强度对空化扩散光化学还原法制备纳米银的影响
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-05-20 DOI: 10.1007/s11182-025-03458-4
N. D. Shapkin, G. F. Kopytov, V. A. Isaev, V. V. Malyshko, A. V. Moiseev, A. A. Basov, M. V. Filippov, G. P. Ilchenko, M. E. Sokolov, D. I. Shashkov
{"title":"Influence of UV radiation intensity on silver nanoparticle synthesis by cavitation-diffusion photochemical reduction","authors":"N. D. Shapkin,&nbsp;G. F. Kopytov,&nbsp;V. A. Isaev,&nbsp;V. V. Malyshko,&nbsp;A. V. Moiseev,&nbsp;A. A. Basov,&nbsp;M. V. Filippov,&nbsp;G. P. Ilchenko,&nbsp;M. E. Sokolov,&nbsp;D. I. Shashkov","doi":"10.1007/s11182-025-03458-4","DOIUrl":"10.1007/s11182-025-03458-4","url":null,"abstract":"<div><p>The paper proposes the mathematical model for the synthesis process of silver nanoparticle using the cavitation-diffusion photochemical reduction method. The influence of the ultraviolet (UV) radiation power on the initial concentration of the silver ammine complex on the nanoparticles size and synthesis rate is studied, and computational results are compared with the experimental data. It is found that the reduced UV radiation power increases the synthesis rate, while changes in the initial concentration of the silver ammine complex affect the size of silver particles.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"510 - 518"},"PeriodicalIF":0.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144385","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
Sapphire dosimetric sensors for carbon ion beam radiation therapy 碳离子束放射治疗用蓝宝石剂量计传感器
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-05-19 DOI: 10.1007/s11182-025-03453-9
A. P. Vorobiev, A. G. Vasileva, S. N. Golovnia, A. P. Soldatov, K. V. Sukharev, O. P. Tolbanov, A. V. Tyazhev, A. E. Vinnik, M. S. Skakunov, A. N. Zarubin
{"title":"Sapphire dosimetric sensors for carbon ion beam radiation therapy","authors":"A. P. Vorobiev,&nbsp;A. G. Vasileva,&nbsp;S. N. Golovnia,&nbsp;A. P. Soldatov,&nbsp;K. V. Sukharev,&nbsp;O. P. Tolbanov,&nbsp;A. V. Tyazhev,&nbsp;A. E. Vinnik,&nbsp;M. S. Skakunov,&nbsp;A. N. Zarubin","doi":"10.1007/s11182-025-03453-9","DOIUrl":"10.1007/s11182-025-03453-9","url":null,"abstract":"<div><p>This study presents the first experimental results on sapphire sensors tested with 175 and 380 MeV/nucleon carbon ion beams. The measurements include the sensor signal curves of dependence on applied voltage (50–500 V), the signal variations with carbon ion beam intensity, and the correlation between absorbed dose in EBT‑3 radiochromic film (positioned in front of the sensors) and total charge registered by the sensors. Additionally, signal stability is assessed at 500 V under constant beam intensity following the irradiation dose monitoring by a relative dosimeter. For the first time, the differential absorbed dose distribution in a water phantom (Bragg curve) is measured using sapphire sensors. The detector signals are recorded at 500 V with a 900 ms integration time across the beam intensities ranging from 7.0·10<sup>7</sup> to 4.5·10<sup>8</sup> ions/pulse.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"461 - 470"},"PeriodicalIF":0.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144225","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
Grain boundary engineering approaches for the structure optimization in commercial copper M1 商品铜M1结构优化的晶界工程方法
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-05-19 DOI: 10.1007/s11182-025-03451-x
T. V. Kozlova, P. V. Kuznetsov, S. N. Meisner, A. G. Burlachenko, I. P. Mishin
{"title":"Grain boundary engineering approaches for the structure optimization in commercial copper M1","authors":"T. V. Kozlova,&nbsp;P. V. Kuznetsov,&nbsp;S. N. Meisner,&nbsp;A. G. Burlachenko,&nbsp;I. P. Mishin","doi":"10.1007/s11182-025-03451-x","DOIUrl":"10.1007/s11182-025-03451-x","url":null,"abstract":"<div><p>The effect of successive thermomechanical treatment in the <i>strain annealing</i> and <i>strain recrystallization</i> modes to the structure optimization of commercial copper M1 is studied within the grain boundary engineering approach. The chosen thermomechanical treatment modes lead to a significant increase in the twin boundary proportion compared to the recrystallized state, the twin clusters formation, and the disruption of the connectivity of random high-angle boundaries. After the thermomechanical treatment in the strain annealing and strain recrystallization modes, the twin cluster growth has been observed; however, the deviation from the ideal twin misorientation has also been increased.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"444 - 451"},"PeriodicalIF":0.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144198","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
Retraction Note to: A comprehensively improved particle swarm optimization algorithm to guarantee particle activity 一种全面改进的粒子群优化算法，保证粒子的活动性
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-05-14 DOI: 10.1007/s11182-025-03463-7
Ya Bi, Anthony Lam, Huiqun Quan, Hui Liu, Cunfa Wang
{"title":"Retraction Note to: A comprehensively improved particle swarm optimization algorithm to guarantee particle activity","authors":"Ya Bi,&nbsp;Anthony Lam,&nbsp;Huiqun Quan,&nbsp;Hui Liu,&nbsp;Cunfa Wang","doi":"10.1007/s11182-025-03463-7","DOIUrl":"10.1007/s11182-025-03463-7","url":null,"abstract":"","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"549 - 550"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143378","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
Gravitational wave and pure radiation in the Bianchi IV universe 比安奇IV宇宙中的引力波和纯辐射
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-05-14 DOI: 10.1007/s11182-025-03460-w
K. E. Osetrin, V. Y. Epp, U. A. Guselnikova
{"title":"Gravitational wave and pure radiation in the Bianchi IV universe","authors":"K. E. Osetrin,&nbsp;V. Y. Epp,&nbsp;U. A. Guselnikova","doi":"10.1007/s11182-025-03460-w","DOIUrl":"10.1007/s11182-025-03460-w","url":null,"abstract":"<div><p>A non-perturbative model of a gravitational wave with pure radiation in an anisotropic Bianchi universe of type IV is constructed. A relationship between the space-time metric parameters and those of the pure radiation is obtained. The trajectories of light rays are found as a solution to the eikonal equation in a given metric. The parameters of light signal propagation in a gravitational wave are calculated. The delay relation for radiation in a gravitational wave is obtained.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"526 - 531"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143377","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
Structure and phase composition of materials fabricated by direct laser deposition using Al-TiB2 composite powder 激光直接沉积Al-TiB2复合粉末制备材料的结构和相组成
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-05-14 DOI: 10.1007/s11182-025-03446-8
A. E. Matveev, V. V. Promakhov, N. A. Schulz, V. R. Bakhmat, T. E. Turanov, O. G. Klimova-Korsmik
{"title":"Structure and phase composition of materials fabricated by direct laser deposition using Al-TiB2 composite powder","authors":"A. E. Matveev,&nbsp;V. V. Promakhov,&nbsp;N. A. Schulz,&nbsp;V. R. Bakhmat,&nbsp;T. E. Turanov,&nbsp;O. G. Klimova-Korsmik","doi":"10.1007/s11182-025-03446-8","DOIUrl":"10.1007/s11182-025-03446-8","url":null,"abstract":"<div><p>The paper studies the structure and phase composition of materials fabricated by direct laser deposition using Al-TiB<sub>2</sub> composite powder obtained by self-propagating high-temperature synthesis (SHS). The fabricated specimens inherit the structure of the SHS-produced powder and consist of the aluminum matrix and TiB<sub>2</sub> ceramic particles. The powder consumption ranging from 5.1 to 7.5 g/min, leads to a change in the size of the coherent scattering region of Al and TiB<sub>2</sub> phases, and the average size of ceramic particles in the material structure. It is shown that consuming 5 g/min of the powder, the high dense microstructure can be obtained with the lowest number of isolated pores.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 3","pages":"400 - 407"},"PeriodicalIF":0.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143654","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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