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Bulletin of the Russian Academy of Sciences: Physics最新文献

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Effect of the Solvating Solvent on the Magnetic Properties of Fe(III) Complexes with Quinoline-Substituted β-Enaminone 溶剂对喹啉取代β-胺酮Fe（III）配合物磁性能的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701509
A. R. Sharipova, E. N. Frolova, O. A. Turanova, L. V. Bazan, R. F. Likerov, A. N. Turanov
{"title":"Effect of the Solvating Solvent on the Magnetic Properties of Fe(III) Complexes with Quinoline-Substituted β-Enaminone","authors":"A. R. Sharipova,&nbsp;E. N. Frolova,&nbsp;O. A. Turanova,&nbsp;L. V. Bazan,&nbsp;R. F. Likerov,&nbsp;A. N. Turanov","doi":"10.1134/S1062873826701509","DOIUrl":"10.1134/S1062873826701509","url":null,"abstract":"<p>This paper studied the effect of solvating molecules on the magnetic properties of new Fe(III) complexes with tridentate β-enaminone of the composition [FeL<sub>2</sub>]BS·Solv, where L = 1-phenyl-3-(quinolin-8-ylamino)prop-2-en-1-onato; BS is the benzenesulfonate anion; and Solv is (C<sub>2</sub>H<sub>5</sub>)<sub>2</sub>O, 2H<sub>2</sub>O, or C<sub>2</sub>H<sub>5</sub>OH. It was shown that varying the solvating molecules is a simple tool for fine-tuning the parameters of the spin-crossover properties.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1539 - 1549"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962014","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
Features of Direct Current Microdischarges between Metal and Liquid Electrolyte Electrodes in an Open Atmosphere 开放气氛下金属与液体电解质电极间的直流微放电特性
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701613
G. K. Tazmeev, K. K. Tazmeev
{"title":"Features of Direct Current Microdischarges between Metal and Liquid Electrolyte Electrodes in an Open Atmosphere","authors":"G. K. Tazmeev,&nbsp;K. K. Tazmeev","doi":"10.1134/S1062873826701613","DOIUrl":"10.1134/S1062873826701613","url":null,"abstract":"<p>Direct current microdischarges in air at atmospheric pressure were experimentally investigated within the current range of 100–1000 mA. The metallic electrodes were made of copper. The liquid electrolyte anode was a sodium chloride solution in distilled water with a molar concentration of 0.1 mol/L. The conditions under which a diffuse spot forms on the copper cathode were identified. The traces of the cathode spot were used to calculate the current density, yielding a value of 9.5 ± 0.4 A/cm<sup>2</sup> for the diffuse spot. High-speed imaging showed that microdischarges with a liquid electrolyte anode, unlike those between metallic electrodes, exhibit lower spatial stability. It was experimentally established that in an open-air atmosphere, an electric discharge between a rod-shaped cathode and a liquid electrolyte anode it is difficult to obtain at currents exceeding 1 A.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1629 - 1634"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962047","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
Transition from Diffuse to Microchannel Form of High-Voltage Nanosecond Discharge in Dense Gases 稠密气体中高压纳秒放电从漫射到微通道的转变
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701662
M. I. Lomaev, D. V. Beloplotov, D. A. Sorokin
{"title":"Transition from Diffuse to Microchannel Form of High-Voltage Nanosecond Discharge in Dense Gases","authors":"M. I. Lomaev,&nbsp;D. V. Beloplotov,&nbsp;D. A. Sorokin","doi":"10.1134/S1062873826701662","DOIUrl":"10.1134/S1062873826701662","url":null,"abstract":"<p>We investigated the stages of breakdown and the process of current microchannel structure formation in a high-voltage nanosecond discharge. The discharge was initiated in a highly inhomogeneous electric field between a pointed high-voltage electrode and a flat grounded electrode under both voltage pulse polarities in air and argon. It was established that the diffuse form of the discharge in atmospheric-pressure air occurs under both voltage pulse polarities. The microchannel structure of current channels in argon at a pressure of 2 atm forms under negative voltage polarity when reflected voltage pulses arrive at the gap. In contrast, under positive polarity, this structure is observed in air as early as the end of the first voltage pulse. It was found that in the plane of the grounded electrode, the current channels are closed at the electrode spots.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1666 - 1672"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962200","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 and Spatial Distribution of Plasma of Atmospheric-Pressure Glow Discharge in a Helium Flow during Thermal Erosion of a Zinc Cathode 锌阴极热侵蚀过程中氦流常压辉光放电等离子体的动力学和空间分布
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701595
K. P. Savkin, D. A. Sorokin, D. V. Beloplotov, A. G. Nikolaev, M. V. Shandrikov, A. A. Cherkasov
{"title":"Dynamics and Spatial Distribution of Plasma of Atmospheric-Pressure Glow Discharge in a Helium Flow during Thermal Erosion of a Zinc Cathode","authors":"K. P. Savkin,&nbsp;D. A. Sorokin,&nbsp;D. V. Beloplotov,&nbsp;A. G. Nikolaev,&nbsp;M. V. Shandrikov,&nbsp;A. A. Cherkasov","doi":"10.1134/S1062873826701595","DOIUrl":"10.1134/S1062873826701595","url":null,"abstract":"<p>Evolution of radiation of a pulse-periodic glow discharge with a zinc cathode insert in an atmospheric-pressure helium flow was investigated. A discharge voltage was 300–350 V, with a current of 250–300 mA and a pulse duration of 7 μs, following at a frequency of 100 kHz. The helium pumping rate was ≈3 L/min. This mode is characterized by the generation of plasma with a high content of atomic zinc. Using high-speed radiation detection methods, it was shown that the highest radiation power of zinc atoms is observed on the cathode surface, decreasing towards the anode, but is still present in the region of the plasma plume beyond the latter. It was found that, in the intervals between discharge current pulses, approximately 1 μs after the current decay, an afterglow pulse is observed, corresponding to the emission of zinc atoms directly on the cathode surface.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1615 - 1622"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962208","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
Electron Beam Synthesis of Cerium Dioxide Nanoparticles and Their Photocatalytic Properties 电子束合成二氧化铈纳米颗粒及其光催化性能
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701716
V. G. Ilves, M. E. Balezin, S. A. Gerasimov, S. Yu. Sokovnin
{"title":"Electron Beam Synthesis of Cerium Dioxide Nanoparticles and Their Photocatalytic Properties","authors":"V. G. Ilves,&nbsp;M. E. Balezin,&nbsp;S. A. Gerasimov,&nbsp;S. Yu. Sokovnin","doi":"10.1134/S1062873826701716","DOIUrl":"10.1134/S1062873826701716","url":null,"abstract":"<p>Using a pulsed nanosecond electron beam with an electron energy of 500 keV, during irradiation of an alcohol solution of cerium nitrate, mesoporous nanopowders (NPs) of cerium dioxide (specific surface area (SSA) = 13 m<sup>2</sup>/g) with variable morphology and high porosity (up to 0.09 cm<sup>3</sup>/g) were obtained, promising for use as a carrier of medicinal forms. An increase in the photocatalytic activity of the obtained NPs during the decomposition of the methyl violet dye was established, depending on the time (dose) of irradiation of cerium nitrate during radiation-chemical synthesis.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1703 - 1707"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962417","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
Application of Convolutional Neural Networks to Improve Tumor Segmentation in Prostate MRI 卷积神经网络在前列腺MRI肿瘤分割中的应用
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701492
N. A. Nefediev, N. E. Staroverov, R. V. Davydov
{"title":"Application of Convolutional Neural Networks to Improve Tumor Segmentation in Prostate MRI","authors":"N. A. Nefediev,&nbsp;N. E. Staroverov,&nbsp;R. V. Davydov","doi":"10.1134/S1062873826701492","DOIUrl":"10.1134/S1062873826701492","url":null,"abstract":"<p>The study aims to obtain segmentations (masks) of areas with prostate cancer in MRI studies of the pelvic organs in men. Various neural network architectures for 2D and 3D segmentation in MRI series were examined, as well as methods for improving results of prostate presegmentation using a classification neural network. Methods for improving prostate segmentation were also considered.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1531 - 1538"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962000","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 Approach to Mathematical Modeling of Plasma Waste Treatment 等离子体废物处理的数学建模方法
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701741
P. I. Petrenko, A. A. Stepanenko, A. V. Pereslavtsev, A. V. Artemov, S. A. Voshchinin, N. S. Chemodanov
{"title":"The Approach to Mathematical Modeling of Plasma Waste Treatment","authors":"P. I. Petrenko,&nbsp;A. A. Stepanenko,&nbsp;A. V. Pereslavtsev,&nbsp;A. V. Artemov,&nbsp;S. A. Voshchinin,&nbsp;N. S. Chemodanov","doi":"10.1134/S1062873826701741","DOIUrl":"10.1134/S1062873826701741","url":null,"abstract":"<p>We presented a comprehensive approach to the mathematical modeling of plasma processing waste, combining analytical calculations of material and heat balances with numerical modeling. The geometry and computational mesh for a plasma-arc ejector were developed. The methodology was verified using the decomposition of granulated polyethylene as an example; it was shown that the discrepancies between the results of the analytical and numerical modeling do not exceed 5–7% by mass in absolute value. Distributions of temperature, velocity, and component concentrations within the working chamber were obtained.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1722 - 1729"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962001","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
Anisotropic Transport Properties of Bi1.06Sn0.04Sb0.9Te2S Bulk Topological Insulator Bi1.06Sn0.04Sb0.9Te2S块状拓扑绝缘子的各向异性输运特性
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701479
T. N. Enderova, V. O. Sakhin, I. I. Gimazov, E. F. Kukovitsky, Yu. I. Talanov
{"title":"Anisotropic Transport Properties of Bi1.06Sn0.04Sb0.9Te2S Bulk Topological Insulator","authors":"T. N. Enderova,&nbsp;V. O. Sakhin,&nbsp;I. I. Gimazov,&nbsp;E. F. Kukovitsky,&nbsp;Yu. I. Talanov","doi":"10.1134/S1062873826701479","DOIUrl":"10.1134/S1062873826701479","url":null,"abstract":"<p>The anisotropy of the transport properties of the bulk topological insulator has been studied using DC resistance measurements and non-resonant microwave absorption. The surface conducting state exhibit a metallic behavior. The bulk conductivity is defined by both a thermally activated mechanism for charge transfer and a variable range hopping mechanism. In case of a current perpendicular to the crystallographic plane of the sample, a complex structure of the energy gap is observed in the bulk.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1515 - 1520"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962013","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
Surface Morphology of Implanted Silicon Formed by Pulsed Light Heating 脉冲光加热注入硅的表面形貌
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S106287382670139X
B. F. Farrakhov
{"title":"Surface Morphology of Implanted Silicon Formed by Pulsed Light Heating","authors":"B. F. Farrakhov","doi":"10.1134/S106287382670139X","DOIUrl":"10.1134/S106287382670139X","url":null,"abstract":"<p>Various forms of textured surface on Si wafers were obtained by ion implantation followed by pulsed light heating. The effects of certain modes of ion implantation with B<sup>+</sup>, He<sup>+</sup>, He<sup>++</sup> ions and pulsed light heating on the mechanism of formation of recrystallized relief periodic microstructures from the molten phase on the surface of Si wafers were determined.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1458 - 1462"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962016","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
Influence of the Orientation of the Metal-Ceramic Plates on the Distribution of the Beam Current Density at the Anode 金属陶瓷板的取向对阳极电流密度分布的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2026-09-14 DOI: 10.1134/S1062873826701728
M. A. Blagodatskikh, M. E. Balezin, S. Yu. Sokovnin
{"title":"Influence of the Orientation of the Metal-Ceramic Plates on the Distribution of the Beam Current Density at the Anode","authors":"M. A. Blagodatskikh,&nbsp;M. E. Balezin,&nbsp;S. Yu. Sokovnin","doi":"10.1134/S1062873826701728","DOIUrl":"10.1134/S1062873826701728","url":null,"abstract":"<p>In technological applications of electron accelerators, the homogeneity of the electron beams current density distribution on the anode is of great importance, since it determines the non-uniformity of the absorbed dose distribution on the irradiated product. For URT-type accelerators, metal-ceramic (MC) cathodes have been developed that have a sufficiently high homogeneity of the electron beam current density distribution on the anode (inhomogeneity &lt;10%). The aim of this work was to study the influence of the MC plate arrangement direction in the cathode holder (along and across), as well as the distance of the MC plate extension beyond the screen cut on the electron beam current density distribution on the anode. The studies were carried out on the URT-1M accelerator with a 420 mm wide cathode with 4 MC plates. During the experiments, the beam current and accelerating voltage (channel resolution &lt;7 ns) and the electron beam current density distribution on the anode were measured using the luminescence method. The experimental results showed that by changing the MC plate arrangement direction and the distance of the MC plate extension beyond the screen cut, it is possible to control not only the shape of the electron beam current density distribution on the anode, but also its amplitude.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"90 9","pages":"1708 - 1713"},"PeriodicalIF":0.48,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148962049","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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