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Bulletin of the Lebedev Physics Institute最新文献

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Possible Mechanisms of Magnetic Field Generation in Outer Parts of Galaxies 星系外部磁场产生的可能机制
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-06-02 DOI: 10.3103/S1068335626600130
E. A. Mikhailov, T. T. Khasaeva, R. Zhang, X. Liu
{"title":"Possible Mechanisms of Magnetic Field Generation in Outer Parts of Galaxies","authors":"E. A. Mikhailov,&nbsp;T. T. Khasaeva,&nbsp;R. Zhang,&nbsp;X. Liu","doi":"10.3103/S1068335626600130","DOIUrl":"10.3103/S1068335626600130","url":null,"abstract":"<p>Large-scale magnetic fields at moderate distances from the center of galaxies (up to 8–10 kpc) are generated by the action of the mean-field dynamo mechanism, and their existence is confirmed by measurements of Faraday rotation. At the same time, the question arises as to the possibility of the existence of fields in outer regions, where the action of the dynamo should be noticeably suppressed. This suggests that other mechanisms of magnetic field generation must become dominant. In this paper, the behavior of large-scale magnetic field disturbances is studied using spectral analysis. Field growth indicators and their typical profiles are obtained. The role of magnetorotational instability in the process of field propagation from the central regions to the periphery of the galaxy is also discussed. Finally, estimates are made for a small-scale field, which, although it has a near-zero mean, can have an energy comparable to the kinetic energy of turbulent motions in the medium.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"53 4","pages":"164 - 169"},"PeriodicalIF":0.7,"publicationDate":"2026-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148141718","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
Erratum to: Hydrothermal Method of Binary CoMoO4/CuMoO4 Nanocomposites As an Electrode for High-Performance Supercapacitor Application 二元CoMoO4/CuMoO4纳米复合材料作为高性能超级电容器电极的水热法勘误
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-06-02 DOI: 10.3103/S106833562560442X
S. Viji, B. Kabilan, A. Dinesh, S. Sakthivel, V. Jeevitha, Manikandan Ayyar, V. Mohanavel, P. Jothilakshmi, G. Ramachandran, M. Santhamoorthy, Y. Slimani, M. A. Almessiere, A. Baykal, S. Santhoshkumar
{"title":"Erratum to: Hydrothermal Method of Binary CoMoO4/CuMoO4 Nanocomposites As an Electrode for High-Performance Supercapacitor Application","authors":"S. Viji,&nbsp;B. Kabilan,&nbsp;A. Dinesh,&nbsp;S. Sakthivel,&nbsp;V. Jeevitha,&nbsp;Manikandan Ayyar,&nbsp;V. Mohanavel,&nbsp;P. Jothilakshmi,&nbsp;G. Ramachandran,&nbsp;M. Santhamoorthy,&nbsp;Y. Slimani,&nbsp;M. A. Almessiere,&nbsp;A. Baykal,&nbsp;S. Santhoshkumar","doi":"10.3103/S106833562560442X","DOIUrl":"10.3103/S106833562560442X","url":null,"abstract":"","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"53 4","pages":"192 - 194"},"PeriodicalIF":0.7,"publicationDate":"2026-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148141717","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 Methodology of Cosmic Ray Measurements in the Atmosphere 大气中宇宙射线测量方法研究
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-04-23 DOI: 10.3103/S1068335625604443
A. N. Kvashnin, V. S. Makhmutov, Yu. I. Stozhkov
{"title":"On the Methodology of Cosmic Ray Measurements in the Atmosphere","authors":"A. N. Kvashnin,&nbsp;V. S. Makhmutov,&nbsp;Yu. I. Stozhkov","doi":"10.3103/S1068335625604443","DOIUrl":"10.3103/S1068335625604443","url":null,"abstract":"<p>The article discusses the methodology for measuring the intensity of cosmic rays in the stratosphere. An evidence base is provided for the stability of the radiosonde characteristics over a long period of stratospheric measurements of cosmic rays using the chosen method of its manufacture and configuration.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"53 3","pages":"117 - 121"},"PeriodicalIF":0.7,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733066","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
Orientational Factor in Double Electron‒Electron Resonance 双电子-电子共振中的取向因子
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-04-23 DOI: 10.3103/S1068335625604327
A. Chernyavskiy, A. M. Kozodaev, I. S. Cojocaru, S. V. Bolshedvorskii, P. G. Vilyuzhanina, S. M. Drofa, S. Ya. Kilin, A. N. Smolyaninov, V. V. Soshenko, A. V. Akimov
{"title":"Orientational Factor in Double Electron‒Electron Resonance","authors":"A. Chernyavskiy,&nbsp;A. M. Kozodaev,&nbsp;I. S. Cojocaru,&nbsp;S. V. Bolshedvorskii,&nbsp;P. G. Vilyuzhanina,&nbsp;S. M. Drofa,&nbsp;S. Ya. Kilin,&nbsp;A. N. Smolyaninov,&nbsp;V. V. Soshenko,&nbsp;A. V. Akimov","doi":"10.3103/S1068335625604327","DOIUrl":"10.3103/S1068335625604327","url":null,"abstract":"<p>Double electron–electron resonance is a pulsed electron paramagnetic resonance method that enables the measurement of distances between spins and the spin concentration in an ensemble. This paper investigates the signal behavior for randomly distributed spins with tilted quantization axes. Numerical calculations supported by Monte Carlo simulations show that the signal decay rate decreases by 14% when the spins are oriented at an angle of 109.5° relative to each other, as is the case for nitrogen-vacancy color centers in diamond. When determining concentration using DEER, this factor should be taken into account.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"53 3","pages":"135 - 138"},"PeriodicalIF":0.7,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733068","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
Assessment of Background from Radioactive Impurities in the Quartz Housing of a Scintillation Detector for the Search for Neutrinoless Double Beta Decay of 150Nd 用于寻找150Nd中微子双β衰变的闪烁探测器石英外壳放射性杂质本底的评估
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-04-23 DOI: 10.3103/S1068335625604492
A. V. Veresnikova, V. I. Gurentsov, V. V. Kazalov, Z. A. Akhmatov, G. Ya. Novikova, D. A. Tekueva, M. Sh. Tkhazaplizhev
{"title":"Assessment of Background from Radioactive Impurities in the Quartz Housing of a Scintillation Detector for the Search for Neutrinoless Double Beta Decay of 150Nd","authors":"A. V. Veresnikova,&nbsp;V. I. Gurentsov,&nbsp;V. V. Kazalov,&nbsp;Z. A. Akhmatov,&nbsp;G. Ya. Novikova,&nbsp;D. A. Tekueva,&nbsp;M. Sh. Tkhazaplizhev","doi":"10.3103/S1068335625604492","DOIUrl":"10.3103/S1068335625604492","url":null,"abstract":"<p>We report a quantitative analysis of the background contribution from natural radioactive impurities (<sup>238</sup>U and <sup>232</sup>Th decay chains) in the quartz housing of a prototype detector with a volume of several liters and a liquid neodymium-loaded organic scintillator. The study involved Monte Carlo simulations using the experimentally measured detector energy resolution. It is shown that the background in the region of interest for the neutrinoless double beta (0ν2β) decay of <sup>150</sup>Nd is consistent with the simulation results for the contributions from the <sup>238</sup>U and <sup>232</sup>Th chains. The projected sensitivity of the experiment to the half-life of neutrinoless double beta decay is calculated. The results are presented in tables and graphs.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"53 3","pages":"139 - 145"},"PeriodicalIF":0.7,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733069","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 Ion Irradiation on the Superconducting Properties of HTS Composites in a Helical Cable 离子辐照对螺旋电缆中高温超导复合材料超导性能的影响
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-04-23 DOI: 10.3103/S1068335625604467
D. A. Abin, A. S. Starikovskii, A. Yu. Malyavina, I. V. Martirosian, S. V. Pokrovskii, R. G. Batulin, M. A. Cherosov, P. A. Fedin, K. E. Prianishnikov, T. V. Kulevoy
{"title":"Effect of Ion Irradiation on the Superconducting Properties of HTS Composites in a Helical Cable","authors":"D. A. Abin,&nbsp;A. S. Starikovskii,&nbsp;A. Yu. Malyavina,&nbsp;I. V. Martirosian,&nbsp;S. V. Pokrovskii,&nbsp;R. G. Batulin,&nbsp;M. A. Cherosov,&nbsp;P. A. Fedin,&nbsp;K. E. Prianishnikov,&nbsp;T. V. Kulevoy","doi":"10.3103/S1068335625604467","DOIUrl":"10.3103/S1068335625604467","url":null,"abstract":"<p>In next-generation Megascience facilities (tokamaks, synchrotrons, and accelerators), strong magnetic fields generated by HTS-based magnetic systems are required to confine plasma and charged particles. The transport and magnetic properties of HTS tapes, which form the basis of these magnetic systems, are sensitive to the type and concentration of defects in the superconducting layer. This paper investigates the effect of ion irradiation on the superconducting properties of HTS tapes in helical cables. The dependence of the critical current of HTS tapes subjected to preliminary ion irradiation on the external magnetic field is studied. Irradiation is performed with Fe<sup>2+</sup> ions at an energy of 5.6 MeV and various fluences at room temperature. The samples consist of 4 mm wide HTS tapes with an exposed superconducting layer, wound on a 5 mm diameter cupronickel tube, as well as undeformed tapes. At a fluence of 5 × 10<sup>12</sup> cm<sup>–2</sup>, the critical current density increases at temperatures below 30 K over the entire measured magnetic field range for undeformed tapes. Further increase in fluence leads to degradation of the superconducting properties. For tapes subjected to bending deformation, the highest critical current density corresponds to a fluence of 1 × 10<sup>13</sup> cm<sup>–2</sup>, although it does not exceed the value for the undeformed, unirradiated sample.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"53 3","pages":"146 - 152"},"PeriodicalIF":0.7,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733067","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
Interaction of Resonances and Antiresonances in Quantum Transport in the Presence of Weak Interelectron Repulsion 弱电子间排斥存在下量子输运中共振与反共振的相互作用
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-04-23 DOI: 10.3103/S1068335625602869
I. D. Kopchinskii, N. M. Shubin
{"title":"Interaction of Resonances and Antiresonances in Quantum Transport in the Presence of Weak Interelectron Repulsion","authors":"I. D. Kopchinskii,&nbsp;N. M. Shubin","doi":"10.3103/S1068335625602869","DOIUrl":"10.3103/S1068335625602869","url":null,"abstract":"<p>We study theoretically the interaction of resonances and antiresonances in the transmission spectrum of a two-level molecular conductor, taking into account weak interelectron Coulomb repulsion in the first order in perturbation theory (within the framework of the Keldysh diagram technique). It is known that in the absence of interaction, a Fano resonance, the formation of a bound state in the continuum, and the coalescence of resonances can be observed depending on the topology of the coupling of the system with the electrodes. These interference phenomena are important for applications in molecular electronics, sensing, and thermoelectricity. It is shown that all resonance features in the transmission spectrum demonstrate a shift towards the Fermi level in the electrodes if weak interelectron repulsion is taken into account. The general conclusions obtained for the two-level model are confirmed by calculations using the illustrative models of cyclobutadiene and benzene molecules.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"53 3","pages":"122 - 134"},"PeriodicalIF":0.7,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733065","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 the NbN Film Heating Process by a Current Pulse 电流脉冲对NbN膜加热过程的模拟
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-04-01 DOI: 10.3103/S1068335625603863
N. D. Kuzmichev, E. V. Danilova, M. A. Vasyutin, D. A. Shilkin
{"title":"Simulation of the NbN Film Heating Process by a Current Pulse","authors":"N. D. Kuzmichev,&nbsp;E. V. Danilova,&nbsp;M. A. Vasyutin,&nbsp;D. A. Shilkin","doi":"10.3103/S1068335625603863","DOIUrl":"10.3103/S1068335625603863","url":null,"abstract":"<p>We report a numerical simulation of the heating of a niobium nitride film by a high-density current pulse (~10<sup>5</sup> A/cm<sup>2</sup>) at low temperatures (<i>T</i> &lt; 20 K) in its longitudinal section, based on a two-dimensional inhomogeneous heat equation. It is shown that at a current pulse of 0.25 ms, the maximum heating temperature of the film does not exceed 0.8 K when using pressure contacts made of beryllium bronze.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 12","pages":"S1236 - S1241"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579154","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
Synthesis and Growth of Single Crystals of a New Topologically Nontrivial Compound CaSn2As2 新型非平凡结构化合物CaSn2As2单晶的合成与生长
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-04-01 DOI: 10.3103/S1068335625603991
M. A. Feshina, A. S. Medvedev, V. A. Vlasenko, A. I. Shilov, K. S. Pervakov
{"title":"Synthesis and Growth of Single Crystals of a New Topologically Nontrivial Compound CaSn2As2","authors":"M. A. Feshina,&nbsp;A. S. Medvedev,&nbsp;V. A. Vlasenko,&nbsp;A. I. Shilov,&nbsp;K. S. Pervakov","doi":"10.3103/S1068335625603991","DOIUrl":"10.3103/S1068335625603991","url":null,"abstract":"<p>Single crystals of the topologically nontrivial CaSn<sub>2</sub>As<sub>2</sub> compound are grown by the self-flux method in SnAs. The distribution maps of elements on the crystal surface are obtained, and the molar ratio of the elements is calculated. The structural configuration of the compound is determined in the trigonal syngony in the space group <span>(Rbar {3}m)</span> with the cell parameters <i>a</i> = 4.1503(13) Å and <i>c</i> = 26.049(11) Å.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 12","pages":"S1248 - S1251"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579184","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 Alternative Method for Estimating the Number of Control Elements of Deformable Mirrors 一种估计变形镜控制元件数目的替代方法
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-04-01 DOI: 10.3103/S1068335625604820
P. M. Kuzmitsky, A. V. Kudryashov, A. L. Rukosuev, V. V. Samarkin, E. A. Khazanov, Yu. V. Sheldakova
{"title":"An Alternative Method for Estimating the Number of Control Elements of Deformable Mirrors","authors":"P. M. Kuzmitsky,&nbsp;A. V. Kudryashov,&nbsp;A. L. Rukosuev,&nbsp;V. V. Samarkin,&nbsp;E. A. Khazanov,&nbsp;Yu. V. Sheldakova","doi":"10.3103/S1068335625604820","DOIUrl":"10.3103/S1068335625604820","url":null,"abstract":"<p>The paper presents a method for determining the optimal number of control elements for flexible bimorph mirrors. It is based on the application of Maréchal’s criterion for quantifying residual phase aberrations. An analysis has revealed that conventional approaches, which are based on evaluating the effectiveness of Zernike polynomial approximations, do not produce accurate results for modal wavefront correctors.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 13","pages":"S1319 - S1323"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579422","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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