发布求助
文献互助 智能选刊 最新文献

Bulletin of the Lebedev Physics Institute最新文献

筛选
英文 中文
Effect of Convection on the Flame Stability and Dynamics in Ultralean Hydrogen–Air Mixtures 对流对超稀薄氢-空气混合物火焰稳定性和动力学的影响
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-28 DOI: 10.3103/S1068335624602826
I. S. Yakovenko, A. D. Kiverin, K. S. Melnikova
{"title":"Effect of Convection on the Flame Stability and Dynamics in Ultralean Hydrogen–Air Mixtures","authors":"I. S. Yakovenko,&nbsp;A. D. Kiverin,&nbsp;K. S. Melnikova","doi":"10.3103/S1068335624602826","DOIUrl":"10.3103/S1068335624602826","url":null,"abstract":"<p>The paper presents a numerical analysis of the combustion dynamics in ultralean hydrogen–air mixtures under terrestrial gravity. The effect of convective flows formed during the buoyant rise of the combustion kernel on its spatial structure is studied. Based on the performed analysis, the mechanisms and conditions for the local flame quenching and transition to a downward flame propagation limit are proposed. The upward motion of the hot combustion kernel under buoyancy force leads to a toroidal vortex that defines axial gas-dynamic flow and continuous inflow of the cold, unburnt mixture to the bottom part of the combustion kernel. The structure of the toroidal vortex, along with the associated axial flow and strain, determines the possibility of downward flame propagation along with the heat losses, which may result in local flame quenching. Obtained results supplement existing knowledge on the role of convection in the combustion near the lean flammability limits.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 2 supplement","pages":"S121 - S129"},"PeriodicalIF":0.7,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169865","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
Community Detection in Networks by Geodetic Sets 基于大地测量集的网络社区检测
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-23 DOI: 10.3103/S1068335625602274
A. K. Ilyushchenko, O. V. Ivanov
{"title":"Community Detection in Networks by Geodetic Sets","authors":"A. K. Ilyushchenko,&nbsp;O. V. Ivanov","doi":"10.3103/S1068335625602274","DOIUrl":"10.3103/S1068335625602274","url":null,"abstract":"<p>Over the past decades a great deal of experience has been accumulated in applying various approaches to solving the problem of finding communities in graphs. The Girvan–Newman algorithm, based on calculating the betweenness centrality of edges, is widely known and demonstrates good results on relatively small graphs. In this paper, we propose a new algorithm based on calculating the attendance centrality. The algorithm combines the ideas of irreversible random walks on a graph, constructing minimum spanning trees, and ranking vertices by centrality. The algorithm has some similarities with the Girvan–Newman algorithm, but some of its features have significantly increased the efficiency of the algorithm. The paper describes the proposed algorithm, analyzes the comparability of the betweenness and attendance values, and considers the results of the algorithm on SBM graphs.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 6","pages":"284 - 290"},"PeriodicalIF":0.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144784","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
Effect of Landau Damping on Beam-Plasma Instability in a Coaxial Waveguide 朗道阻尼对同轴波导中光束-等离子体不稳定性的影响
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-23 DOI: 10.3103/S1068335625602249
A. M. Ignatov
{"title":"Effect of Landau Damping on Beam-Plasma Instability in a Coaxial Waveguide","authors":"A. M. Ignatov","doi":"10.3103/S1068335625602249","DOIUrl":"10.3103/S1068335625602249","url":null,"abstract":"<p>We report the results of calculations of the electrodynamic characteristics of a beam-plasma waveguide for the case of a finite plasma temperature. An increase in the plasma temperature is shown to lead to a significant decrease in the beam-plasma instability increment.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 6","pages":"274 - 276"},"PeriodicalIF":0.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144787","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
Formation of Complexes in Polysaccharide Hydrogels according to Raman Spectra in Liquid and Dried Pectin Gel 根据液体和干燥果胶凝胶的拉曼光谱研究多糖水凝胶中配合物的形成
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-23 DOI: 10.3103/S1068335625602006
G. A. Davydova, M. T. Mahamadiev, N. N. Melnik, E. V. Perevedentseva, I. I. Selezneva, L. L. Chaikov
{"title":"Formation of Complexes in Polysaccharide Hydrogels according to Raman Spectra in Liquid and Dried Pectin Gel","authors":"G. A. Davydova,&nbsp;M. T. Mahamadiev,&nbsp;N. N. Melnik,&nbsp;E. V. Perevedentseva,&nbsp;I. I. Selezneva,&nbsp;L. L. Chaikov","doi":"10.3103/S1068335625602006","DOIUrl":"10.3103/S1068335625602006","url":null,"abstract":"<p>We have detected the emergence of luminescence in pectin hydrogel, the disappearance or weakening of some lines present in the spectra of dry samples in the Raman spectra of hydrogels, and the occurrence of new lines. This suggests the formation of complexes consisting of pectin‒water‒pectin units in the hydrogel, their presence being due to the appearance of hydrogen bonds in pectin gel.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 6","pages":"240 - 247"},"PeriodicalIF":0.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144785","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
An Integrated Approach to a High-Volume Cryogenic Target Supply for Cyclic Irradiation with a High-Power Laser 高功率激光循环辐照大体积低温靶源的集成方法
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-23 DOI: 10.3103/S1068335625602067
I. V. Aleksandrova, E. R. Koresheva, A. A. Akunets
{"title":"An Integrated Approach to a High-Volume Cryogenic Target Supply for Cyclic Irradiation with a High-Power Laser","authors":"I. V. Aleksandrova,&nbsp;E. R. Koresheva,&nbsp;A. A. Akunets","doi":"10.3103/S1068335625602067","DOIUrl":"10.3103/S1068335625602067","url":null,"abstract":"<p>Fabrication and injection of the cryogenic fuel targets under high repetition rate (HRR) conditions are a necessary requirement for fueling an inertial fusion energy (IFE) reactor. At the Lebedev Physical Institute (LPI), research has begun in the area of a conceptual scheme development for the integration of all functional processes of in-line production of cryogenic targets and their noncontact delivery for laser beam irradiation. This work is based on the free-standing target (FST) production cycle that includes (1) rapid fuel layering (&lt;30 s) in free-standing and line-moving shells, which ensures mass target production and tritium inventory reduction in the system [1, 2]; (2) magnetic levitation (MAGLEV) technologies for acceleration of targets without mechanical friction and their subsequent injection at the laser focus of the IFE facility [3]; and (3) holographic pattern recognition methods for on-line tracking of the injected targets [4]. The paper discusses the developed element base, which allows one to integrate several FST-production lines into a single system, providing cyclic target irradiation for the purpose of the mass supply of fuel for experiments on existing laser facilities, as well as for future IFE reactors.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 6","pages":"254 - 259"},"PeriodicalIF":0.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144782","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
Reactions with Quarks before Their Confinement 夸克禁闭前的反应
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-23 DOI: 10.3103/S1068335625601980
V. V. Burdyuzha
{"title":"Reactions with Quarks before Their Confinement","authors":"V. V. Burdyuzha","doi":"10.3103/S1068335625601980","DOIUrl":"10.3103/S1068335625601980","url":null,"abstract":"<p>We consider the period of the Universe evolution when quarks were in a free state (10<sup>‒38</sup>‒10<sup>‒30</sup> s). Quarks with an electric charge <i>q</i> = ±2/3 and ±2/3 at the input in reactions of scattering on bosons in the supersymmetric period of evolution (10<sup>16</sup>‒10<sup>12</sup> GeV) could create both the baryonic and antibaryonic world. Additional reactions with the same gauge (<i>B‒L</i>) also took place at <i>q</i> = ±2/3 and ±1/3. The subsequent confinement of quarks hardened the ratio of u and d quarks in protons and in light nuclei such as deuterons and α-particles. The stirring of quarks in scattering reactions with the formation of leptons led to the fixation of the composition of the main baryonic components as well as to the baryon and lepton asymmetry. The scattering bosons could be deuterons and α-particles.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 6","pages":"277 - 283"},"PeriodicalIF":0.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144783","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
Cabbage-Like NiCo2O4/rGO Nanocomposites: Boosting Capacitance and Power Density for Next-Generation Supercapacitors 白菜状NiCo2O4/rGO纳米复合材料：提高下一代超级电容器的电容和功率密度
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-23 DOI: 10.3103/S1068335624602085
Bandana Jadawn, Pukhrambam Dipak, Rajendra Kumar Tiwari, Radha Tomar
{"title":"Cabbage-Like NiCo2O4/rGO Nanocomposites: Boosting Capacitance and Power Density for Next-Generation Supercapacitors","authors":"Bandana Jadawn,&nbsp;Pukhrambam Dipak,&nbsp;Rajendra Kumar Tiwari,&nbsp;Radha Tomar","doi":"10.3103/S1068335624602085","DOIUrl":"10.3103/S1068335624602085","url":null,"abstract":"<p>In the present work, NiCo<sub>2</sub>O<sub>4</sub> and NiCo<sub>2</sub>O<sub>4</sub>/rGO nanocomposites were synthesized by using hydrothermal method. Thermogravimetric analysis (TGA) reveals that NiCo<sub>2</sub>O<sub>4</sub>/rGO was more stable as compared to NiCo<sub>2</sub>O<sub>4</sub>. Electrochemical studies reveal that the NiCo<sub>2</sub>O<sub>4</sub>/rGO exhibits high specific capacitance of 1960 F/g in comparison with NiCo<sub>2</sub>O<sub>4</sub> of 870 F/g. NiCo<sub>2</sub>O<sub>4</sub>/rGO has energy density of 300 W h/kg at low power density and ultra high power density of 18.74 kW/kg at low energy density. Incorporation of reduced graphene oxide increases the specific capacitance, energy density and power density of the electrode material. The SEM micrographs reveal the formation of cabbage-like structure of the nanocomposite. These results of NiCo<sub>2</sub>O<sub>4</sub>/rGO have drawn increasing attention as the latter is a promising electrode material for high performance supercapacitors.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 6","pages":"265 - 273"},"PeriodicalIF":0.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144789","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
A New Modification of the Aneroid Barometer for Cosmic Ray Radiosondes and Examination of Its Characteristics 宇宙射线探空仪无气压计的新改进及其特性检验
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-23 DOI: 10.3103/S1068335625601918
A. N. Kvashnin
{"title":"A New Modification of the Aneroid Barometer for Cosmic Ray Radiosondes and Examination of Its Characteristics","authors":"A. N. Kvashnin","doi":"10.3103/S1068335625601918","DOIUrl":"10.3103/S1068335625601918","url":null,"abstract":"<p>The paper discusses the design of an upgraded barometer with an aneroid box. The results of testing this barometer for the stability of calibration data over time and at temperatures below zero are presented. The results of testing the operation of the barometer as part of radiosondes for measuring cosmic rays during their flights into the stratosphere are also discussed.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 6","pages":"260 - 264"},"PeriodicalIF":0.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144786","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
Simulation of Polarized Synchrotron Radiation of Cosmic Rays in a Synthetic Turbulent Magnetic Field 宇宙射线偏振同步辐射在合成湍流磁场中的模拟
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-23 DOI: 10.3103/S1068335624602231
P. K. Batrakov, V. O. Yurovsky, I. A. Kudryashov
{"title":"Simulation of Polarized Synchrotron Radiation of Cosmic Rays in a Synthetic Turbulent Magnetic Field","authors":"P. K. Batrakov,&nbsp;V. O. Yurovsky,&nbsp;I. A. Kudryashov","doi":"10.3103/S1068335624602231","DOIUrl":"10.3103/S1068335624602231","url":null,"abstract":"<p>We report a method for simulating synchrotron radiation of relativistic electrons under conditions of spatial turbulence of an inhomogeneous model galactic magnetic field. The software package developed in this study allows polarized spectra of the simulated synchrotron radiation to be constructed. In addition, a model visualization of the sky is implemented, demonstrating the spatial nonuniformity of the distribution of the synchrotron radiation power perceived by the observer. This approach opens up a possibility of a detailed study of the behavior of the interstellar turbulent magnetic field using synchrotron radiation maps, which is especially important for research in the field of cosmic ray physics.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 6","pages":"233 - 239"},"PeriodicalIF":0.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144781","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
Temperature Dependence of Response to Muons for Plastic Scintillator Tiles Wrapped in Reflective Film 包裹在反射膜中的塑料闪烁体对μ子响应的温度依赖性
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-07-23 DOI: 10.3103/S106833562560189X
M. V. Chadeeva, V. Yu. Rusinov, A. A. Stifutkin
{"title":"Temperature Dependence of Response to Muons for Plastic Scintillator Tiles Wrapped in Reflective Film","authors":"M. V. Chadeeva,&nbsp;V. Yu. Rusinov,&nbsp;A. A. Stifutkin","doi":"10.3103/S106833562560189X","DOIUrl":"10.3103/S106833562560189X","url":null,"abstract":"<p>The planned experiments at the High-Luminosity Large Hadron Collider require detector upgrades with increased subsystem segmentation to address the experimental challenges in extremely hard pileup conditions. Both silicon- and scintillator-based calorimeter elements are under development and tests for advanced particle detectors. In this work, the temperature dependence of response to cosmic muons has been studied for small scintillator tiles wrapped in reflective film with the direct readout of light by silicon photomultipliers. The response of such cells under study is observed to reduce by about 10% with decreasing temperature from +30 down to –30°C.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 6","pages":"248 - 253"},"PeriodicalIF":0.7,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144788","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：604180095
Book学术官方微信