发布求助
文献互助 智能选刊 最新文献

Russian Physics Journal最新文献

筛选
英文 中文
On integrability of Klein-Gordon equations in electromagnetic fields invariant under subgroups of the Poincare group
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-14 DOI: 10.1007/s11182-024-03324-9
A. A. Magazev, I. V. Shirokov
{"title":"On integrability of Klein-Gordon equations in electromagnetic fields invariant under subgroups of the Poincare group","authors":"A. A. Magazev,&nbsp;I. V. Shirokov","doi":"10.1007/s11182-024-03324-9","DOIUrl":"10.1007/s11182-024-03324-9","url":null,"abstract":"<div><p>The structure of the symmetry operator algebra of the Klein-Gordon equation in an external electromagnetic field is described in terms of cohomologies of the Poincare subalgebras. An application of the method of noncommutative integration to constructing exact solutions of the Klein-Gordon equation is discussed. A classification of inequivalent electromagnetic fields invariant under simply transitive subgroups of the Poincare group, admitting the noncommutative integration of the Klein-Gordon equation, is presented.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 11","pages":"1878 - 1886"},"PeriodicalIF":0.4,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571092","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
Electromagnetic spectra of magnetite and MWCNT ferrofluids
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-14 DOI: 10.1007/s11182-024-03362-3
A. A. Pavlova, V. I. Suslayev, E. Yu. Korovin, D. A. Mazilov
{"title":"Electromagnetic spectra of magnetite and MWCNT ferrofluids","authors":"A. A. Pavlova,&nbsp;V. I. Suslayev,&nbsp;E. Yu. Korovin,&nbsp;D. A. Mazilov","doi":"10.1007/s11182-024-03362-3","DOIUrl":"10.1007/s11182-024-03362-3","url":null,"abstract":"<div><p>The paper focuses on electrophysical properties of ferrofluids based on kerosene and synthetic oil with iron oxides. The influence of multi-walled carbon nanotubes on shielding properties of ferrofluids is studied at different magnetic field orientations relative to electromagnetic field lines. Reflection coefficient spectra are obtained at the microwave frequency using mathematical simulation. This work shows the possibility of using ferrofluids to solve health and safety problems.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 11","pages":"2178 - 2184"},"PeriodicalIF":0.4,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571090","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
Angular distribution of radiation from charged particle moving along circular arc
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-13 DOI: 10.1007/s11182-024-03328-5
S. E. Boichenko, G. F. Kopytov, V. B. Tlyachev
{"title":"Angular distribution of radiation from charged particle moving along circular arc","authors":"S. E. Boichenko,&nbsp;G. F. Kopytov,&nbsp;V. B. Tlyachev","doi":"10.1007/s11182-024-03328-5","DOIUrl":"10.1007/s11182-024-03328-5","url":null,"abstract":"<div><p>The paper presents the in-depth analysis of the angular distribution of one linear polarization component of the radiation power averaged over frequency, for the charge moving along the circular arc with the radius R and central angle 2γ. Based on the numerical analysis, the angle range is obtained for extreme values of the sigma component of the radiation power. The velocity is determined for asymptotic formulas with good approximation.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 11","pages":"1918 - 1924"},"PeriodicalIF":0.4,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570990","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
Dual Lagrangian formulations for free massive fields of higher spins in three dimensions
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-09 DOI: 10.1007/s11182-024-03329-4
E. D. Skvortsov, A. A. Sharapov, D. J. Shcherbatov
{"title":"Dual Lagrangian formulations for free massive fields of higher spins in three dimensions","authors":"E. D. Skvortsov,&nbsp;A. A. Sharapov,&nbsp;D. J. Shcherbatov","doi":"10.1007/s11182-024-03329-4","DOIUrl":"10.1007/s11182-024-03329-4","url":null,"abstract":"<div><p>New relativistic wave equations and Lagrangians are proposed for massive fields of integer spins in three-dimensional Minkowski space.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 11","pages":"1925 - 1930"},"PeriodicalIF":0.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570915","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
Cosmological lithium problem solution in accelerator experiment
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-09 DOI: 10.1007/s11182-024-03320-z
G. N. Dudkin
{"title":"Cosmological lithium problem solution in accelerator experiment","authors":"G. N. Dudkin","doi":"10.1007/s11182-024-03320-z","DOIUrl":"10.1007/s11182-024-03320-z","url":null,"abstract":"<div><p>The cosmological lithium problem is a serious problem for understanding the early Universe, which casts doubt on the Big Bang nucleosynthesis (BBN) model. The problem is that the data on the abundance of <sup>6</sup>Li and <sup>7</sup>Li elements obtained from astronomic observations and in the BBN model are too different, based on the data on all nuclear reactions in which these elements produce (or destroy). Astronomy continues to improve the optical instrumentation in order to achieve better resolution and efficiency. In nuclear physics, cross sections of all reactions resulting in the lithium nucleus production (or destruction) are being clarified. This work presents a brief review of related theoretical calculations and experimental data. Experimental results are presented in the laboratory coordinate system for <sup>3</sup>H(<sup>3</sup>He, γ)<sup>6</sup>Li reaction at an energy of 38 keV, first obtained using the Hall ion accelerator in National Research Tomsk Polytechnic University, Tomsk, Russia. <i>S</i>-factor calculated for <sup>3</sup>H(<sup>3</sup>He, γ)<sup>6</sup>Li S = 0.15 ± 0.03 keV·b reaction is inconsistent either with approximation of the experimental data obtained at high energies, or theoretical calculations. It is also inconsistent with assumptions about a new physics hidden in this reaction. Our work discusses the possibility of solving the cosmological lithium problem <i>via</i> reactions with light neutron clusters.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 11","pages":"1838 - 1848"},"PeriodicalIF":0.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570954","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
Calculation of radiation hardness of chromium-compensated gallium arsenade sensors irradiated with 1–20 MeV beta particles
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-09 DOI: 10.1007/s11182-024-03358-z
A. V. Tyazhev, A. E. Vinnik, A. N. Zarubin, I. D. Chsherbakov, M. S. Skakunov, O. P. Tolbanov, L. K. Shaimerdenova, A. V. Shemeryankina, P. V. Kosmachev, S. V. Panin
{"title":"Calculation of radiation hardness of chromium-compensated gallium arsenade sensors irradiated with 1–20 MeV beta particles","authors":"A. V. Tyazhev,&nbsp;A. E. Vinnik,&nbsp;A. N. Zarubin,&nbsp;I. D. Chsherbakov,&nbsp;M. S. Skakunov,&nbsp;O. P. Tolbanov,&nbsp;L. K. Shaimerdenova,&nbsp;A. V. Shemeryankina,&nbsp;P. V. Kosmachev,&nbsp;S. V. Panin","doi":"10.1007/s11182-024-03358-z","DOIUrl":"10.1007/s11182-024-03358-z","url":null,"abstract":"<div><p>The paper presents the calculation results of the charge carrier lifetime and charge collection efficiency of sensors based on chromium-compensated gallium arsenide irradiated with beta particles at the energy of 1 to 20 MeV. It is found that the charge collection efficiency decreases down to 1% of the initial value after the sensor irradiation up to doses of about 1 MGy. The thickness reduction to 100–150 μm improves the sensor radiation resistance up to 2 MGy. It is shown that calculation results are in agreement with the experimental data.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 11","pages":"2144 - 2151"},"PeriodicalIF":0.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570957","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
Unlubricated sliding of additively manufactured heterophase CuAl-B4C composite at elevated temperatures
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-09 DOI: 10.1007/s11182-024-03357-0
A. V. Filippov, A. V. Vorontsov, N. N. Shamarin, N. V. Semenchuk
{"title":"Unlubricated sliding of additively manufactured heterophase CuAl-B4C composite at elevated temperatures","authors":"A. V. Filippov,&nbsp;A. V. Vorontsov,&nbsp;N. N. Shamarin,&nbsp;N. V. Semenchuk","doi":"10.1007/s11182-024-03357-0","DOIUrl":"10.1007/s11182-024-03357-0","url":null,"abstract":"<div><p>The article presents the results of experimental studies of the state of the surface and near-surface layers of a heterophase material after sliding friction at different temperatures. Based on the data of X‑ray phase analysis and scanning electron microscopy, the state of the studied layers has been established. The reasons for the decrease in the friction coefficient and wear intensity of the heterophase material are studied.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 11","pages":"2136 - 2143"},"PeriodicalIF":0.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570955","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 organisation of bimetallic elements of functional products printed from aluminium-manganese bronze and steel by Wire-Arc additive technology
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-09 DOI: 10.1007/s11182-024-03334-7
V. M. Semenchuk, A. V. Chumaevskii, K. V. Rubtsov, V. E. Rubtsov, N. L. Savchenko, E. A. Kolubaev
{"title":"Structure organisation of bimetallic elements of functional products printed from aluminium-manganese bronze and steel by Wire-Arc additive technology","authors":"V. M. Semenchuk,&nbsp;A. V. Chumaevskii,&nbsp;K. V. Rubtsov,&nbsp;V. E. Rubtsov,&nbsp;N. L. Savchenko,&nbsp;E. A. Kolubaev","doi":"10.1007/s11182-024-03334-7","DOIUrl":"10.1007/s11182-024-03334-7","url":null,"abstract":"<div><p>Regularities of structure formation of bimetallic elements of aluminum-manganese bronze CuAl9Mn2 and low-alloy structural steel A516 using different sequences of component deposition during printing by wire-arc additive manufacturing are investigated. It is found out that the sequence of material deposition affects the product structure and mechanical properties. Due to the differing melting points of bronze and steel, the samples show either a sharp fusion boundary between the components or their highly diluted mixture. According to the mechanical tests, the ultimate strength of the steel/bronze specimens reaches 450 MPa, while that of the bronze/steel specimens has lower values (220–350 MPa) due to the presence of defects.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 11","pages":"1969 - 1975"},"PeriodicalIF":0.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571006","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
Geant4 pre-compound model upgrade
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-09 DOI: 10.1007/s11182-024-03333-8
N. A. Chalyi, V. N. Ivanchenko
{"title":"Geant4 pre-compound model upgrade","authors":"N. A. Chalyi,&nbsp;V. N. Ivanchenko","doi":"10.1007/s11182-024-03333-8","DOIUrl":"10.1007/s11182-024-03333-8","url":null,"abstract":"<div><p>The paper deals with the toolkit improvement of the Geant4 pre-compound model. This model is used in several high-energy models for sampling the final state in hadron–nucleus and ion–nucleus collisions. Modifications of the proposed model are included in the toolkit development. The next Geant4 11.3 version will be available to users in December 2024.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 11","pages":"1962 - 1968"},"PeriodicalIF":0.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571016","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
Morphology and microhardness of Cu-Al powder mixture depending on duration of high-energy ball milling
IF 0.4 4区 物理与天体物理
Russian Physics Journal Pub Date : 2025-01-09 DOI: 10.1007/s11182-024-03347-2
D. A. Osipov, A. D. Ishkov, I. V. Smirnov, K. V. Grinyaev, I. A. Ditenberg
{"title":"Morphology and microhardness of Cu-Al powder mixture depending on duration of high-energy ball milling","authors":"D. A. Osipov,&nbsp;A. D. Ishkov,&nbsp;I. V. Smirnov,&nbsp;K. V. Grinyaev,&nbsp;I. A. Ditenberg","doi":"10.1007/s11182-024-03347-2","DOIUrl":"10.1007/s11182-024-03347-2","url":null,"abstract":"<div><p>The effect of high-energy ball milling duration on the morphology and microhardness of Cu-Al powder mixture, characterized by high relaxation capacity of the components, is studied. It is shown that as early as in the primary processing stage the initial powder particles are combined into plate-shaped conglomerates. A longer ball milling duration promotes the consolidation and compaction of the conglomerates. It is found out that these processes are accompanied by the formation of a solid solution of aluminum in copper with a subsequent formation of ordered phases. A transformation of the structural-phase state of the powder mixture causes a significant increase in its microhardness.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"67 11","pages":"2073 - 2076"},"PeriodicalIF":0.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571020","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信