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 Femtosecond Laser Pulse Chirp on Spectral Characteristics during Filamentation in Compressed Gas 飞秒激光脉冲啁啾对压缩气体成丝过程光谱特性的影响
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-04-01 DOI: 10.3103/S1068335625604741
Yu. E. Geints, A. D. Bulygin, V. O. Kompanets, S. V. Chekalin
{"title":"Effect of Femtosecond Laser Pulse Chirp on Spectral Characteristics during Filamentation in Compressed Gas","authors":"Yu. E. Geints,&nbsp;A. D. Bulygin,&nbsp;V. O. Kompanets,&nbsp;S. V. Chekalin","doi":"10.3103/S1068335625604741","DOIUrl":"10.3103/S1068335625604741","url":null,"abstract":"<p>We report an experimental and theoretical study of supercontinuum generation during filamentation of chirped femtosecond optical pulses in compressed nitrogen under tight-focusing conditions. It is shown that the chirping of pulses leads to a decrease in the efficiency of their spectrum broadening with increasing gas pressure. Furthermore, pulses with a negative chirp exhibit a broader supercontinuum than those with equal modulation depth but a positive chirp. The paper also examines the influence of the emission spectrum width on the plasma formation mechanism and, through this, the feedback effect on the spectrum width. It is numerically demonstrated that such a self-consistent approach significantly improves the simulation results and markedly strengthens the quantitative agreement with the experiment, which is attributed to a softer incorporation of plasma effects for broad-spectrum radiation.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 13","pages":"S1415 - S1424"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579420","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
Eigenmodes of the Radial Current Decay in No-Insulation HTS Coils 无绝缘高温超导线圈中径向电流衰减的本征模
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/S1068335625603917
D. S. Yashkin, D. N. Diev, A. V. Polyakov, A. V. Naumov
{"title":"Eigenmodes of the Radial Current Decay in No-Insulation HTS Coils","authors":"D. S. Yashkin,&nbsp;D. N. Diev,&nbsp;A. V. Polyakov,&nbsp;A. V. Naumov","doi":"10.3103/S1068335625603917","DOIUrl":"10.3103/S1068335625603917","url":null,"abstract":"<p>The paper examines the problem of nonuniform radial current decay during current input/output in a no-insulated HTS coil. An approach is proposed that considers the radial current eigenmodes that decay with time, which explains the experimentally observed presence of several exponential processes. The approach is substantiated using the equivalent circuit method and is illustrated by an experiment with a no-insulated HTS test coil.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 12","pages":"S1287 - S1291"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579413","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
Features of Memory Erasure in a Multigigahertz Chaotic Light Pulse Generator 多千兆赫混沌光脉冲发生器的记忆擦除特性
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/S1068335625604777
M. V. Gorbunkov, Yu. Ya. Maslova, Yu. A. Sinichkina
{"title":"Features of Memory Erasure in a Multigigahertz Chaotic Light Pulse Generator","authors":"M. V. Gorbunkov,&nbsp;Yu. Ya. Maslova,&nbsp;Yu. A. Sinichkina","doi":"10.3103/S1068335625604777","DOIUrl":"10.3103/S1068335625604777","url":null,"abstract":"<p>The dynamics of a multigigahertz chaotic oscillator based on a solid-state laser with dual feedback is investigated. Numerical simulations of nonlinear discrete maps demonstrate that a reduction in the modulator bias voltage substantially decreases the gain required for the onset of chaotic dynamics. The requirements for the accuracy of setting both the relative feedback loop sensitivity and the delay for implementing chaotic dynamics are determined.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 13","pages":"S1362 - S1367"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579417","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
Analytical Theory of Relativistic Self-Trapping of Laser Light in Plasmas and Conditions for Its Implementation 等离子体中激光相对论性自俘获的解析理论及其实现条件
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/S1068335625604753
V. F. Kovalev, V. Yu. Bychenkov
{"title":"Analytical Theory of Relativistic Self-Trapping of Laser Light in Plasmas and Conditions for Its Implementation","authors":"V. F. Kovalev,&nbsp;V. Yu. Bychenkov","doi":"10.3103/S1068335625604753","DOIUrl":"10.3103/S1068335625604753","url":null,"abstract":"<p>Based on a nonlinear Schrödinger equation with relativistic nonlinearity, we derive an analytical solution describing waveguide propagation of a laser beam in plasma—the relativistic self-trapping (RST) regime of laser light. The developed theory of relativistic self-trapping is applicable over the entire range of laser intensities, from the weakly relativistic regime through the relativistic domain and up to the ultrarelativistic limit. From a practical standpoint, this all-range theory yields an important result: a relatively simple and easily applicable quantitative formula that analytically defines the condition for the implementation of the RST regime. This condition is expressed as a relationship between the transverse size of the plasma channel, the plasma density, and the laser intensity.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 13","pages":"S1334 - S1349"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579589","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
Novel High-Entropy Superconductor (Na0.2K0.2Rb0.2Sr0.2Ba0.2)Fe2As2 新型高熵超导体（Na0.2K0.2Rb0.2Sr0.2Ba0.2）Fe2As2
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/S1068335625603942
A. D. Denishchenko, V. A. Vlasenko, K. S. Pervakov
{"title":"Novel High-Entropy Superconductor (Na0.2K0.2Rb0.2Sr0.2Ba0.2)Fe2As2","authors":"A. D. Denishchenko,&nbsp;V. A. Vlasenko,&nbsp;K. S. Pervakov","doi":"10.3103/S1068335625603942","DOIUrl":"10.3103/S1068335625603942","url":null,"abstract":"<p>We report on synthesis of a polycrystalline high-entropy iron-based superconductor (Na<sub>0.2</sub>K<sub>0.2</sub>Rb<sub>0.2</sub>Sr<sub>0.2</sub>Ba<sub>0.2</sub>)Fe<sub>2</sub>As<sub>2</sub> by mechanical alloying. The phase composition is confirmed by X-ray diffraction. The superconducting transition temperature is found to be 10.8 K, and according to magnetic measurements, only one superconducting phase is present in the sample.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 12","pages":"S1252 - S1256"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579153","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 Electron Irradiation Dose on the Superluminescence of NV¯ and C Centers in High-Pressure High-Temperature Diamond 电子辐照剂量对高压高温金刚石中NV¯和C中心超发光的影响
IF 0.7 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2026-04-01 DOI: 10.3103/S1068335625604807
V. F. Lebedev, T. S. Misnikova, Ya. A. Ryvkina, E. A. Vasil’ev, I. V. Klepikov, A. V. Kolyadin, V. G. Vins
{"title":"Effect of Electron Irradiation Dose on the Superluminescence of NV¯ and C Centers in High-Pressure High-Temperature Diamond","authors":"V. F. Lebedev,&nbsp;T. S. Misnikova,&nbsp;Ya. A. Ryvkina,&nbsp;E. A. Vasil’ev,&nbsp;I. V. Klepikov,&nbsp;A. V. Kolyadin,&nbsp;V. G. Vins","doi":"10.3103/S1068335625604807","DOIUrl":"10.3103/S1068335625604807","url":null,"abstract":"<p>We report an investigation of spectral and temporal properties of NV¯ centers in diamond plates fabricated from a single HPHT crystal but subjected to different electron irradiation doses during postgrowth processing. Samples 52734-1 and 52734-2, each with approximately the same nitrogen concentration of 60 ppm, are irradiated with doses of 1 and 2 × 10<sup>18</sup> e<sup>‒</sup>/cm<sup>2</sup>, respectively. Particular attention is paid to the effect of irradiation dose on the concentration of NV¯ centers and the associated changes in the spectral and temporal properties of superluminescence under identical conditions of optical excitation with laser radiation at a wavelength of 532 nm. Analysis of the absorption spectra reveals that doubling the irradiation dose results in a 1.4-fold increase in the concentration of NV¯ centers—from 7.7 to 10.9 ppm—with a corresponding decrease in the concentration of isolated nitrogen centers (C centers)—from 49 to 43 ppm. The results demonstrate a nonlinear dependence of the increase in the concentration of NV¯ centers on the irradiation dose and make it possible to identify key characteristics of the samples and pumping conditions that determine the efficiency of superluminescence. Specifically, doubling the irradiation dose results in a threefold increase in the spectral intensity and a significant decrease in the duration of the superluminescence pulses. It is found that to achieve efficient superluminescence, it is important not only to have a significant excess of the concentration of C centers over the concentration of NV¯ centers, but also the absolute concentration of NV¯ centers and pump parameters such as the energy density of the pump pulses and the volume of the sample with a population inversion.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 13","pages":"S1387 - S1392"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579622","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
Numerical Analysis of Normal Zone Propagation Processes in Cables for Superconducting Magnetic Energy Storage Systems 超导磁储能系统电缆中正区传播过程的数值分析
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/S1068335625604005
I. V. Martirosian, D. A. Aleksandrov, S. V. Pokrovskii
{"title":"Numerical Analysis of Normal Zone Propagation Processes in Cables for Superconducting Magnetic Energy Storage Systems","authors":"I. V. Martirosian,&nbsp;D. A. Aleksandrov,&nbsp;S. V. Pokrovskii","doi":"10.3103/S1068335625604005","DOIUrl":"10.3103/S1068335625604005","url":null,"abstract":"<p>The paper presents the results of a numerical analysis of energy loss and of the normal zone propagation processes in multilayer HTSC cables for various geometric configurations, including CORC cables, Roebel cables, and a twisted stack of HTSC tapes. The energy loss dependence on the frequency of AC transport current and the dependence of the normal zone propagation velocity on the amplitude of the constant current load are found.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 12","pages":"S1274 - S1281"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579414","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
Contribution of Spin‒Orbit Interaction in a Two-Dimensional Superconductor to the Vortex Supercurrent 二维超导体中自旋轨道相互作用对涡旋超电流的贡献
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/S1068335625604157
A. O. Zlotnikov
{"title":"Contribution of Spin‒Orbit Interaction in a Two-Dimensional Superconductor to the Vortex Supercurrent","authors":"A. O. Zlotnikov","doi":"10.3103/S1068335625604157","DOIUrl":"10.3103/S1068335625604157","url":null,"abstract":"<p>We report a study of the features of the vortex supercurrent in a two-dimensional superconductor with two inverted electron bands and a Rashba spin‒orbit interaction between different orbitals. Using the tight-binding approximation and Bogoliubov‒de Gennes equations, an expression is derived for the supercurrent resulting from electron hopping between lattice sites with spin flips, which in turn are caused by the spin‒orbit interaction. It is shown that, at a significant spin‒orbit coupling intensity, this contribution to the total supercurrent can exceed the contribution from standard electron hopping processes in the lattice. Moreover, these contributions have different temperature dependences.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 12","pages":"S1311 - S1317"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579416","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
Regimes of Single-Pulse Ablation of Nanometer-Thick Nickel Films by Femtosecond Laser Pulses 飞秒激光单脉冲烧蚀纳米厚镍膜的机理
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/S106833562560473X
P. S. Komarov, E. V. Struleva, S. A. Evlashin, S. I. Ashitkov
{"title":"Regimes of Single-Pulse Ablation of Nanometer-Thick Nickel Films by Femtosecond Laser Pulses","authors":"P. S. Komarov,&nbsp;E. V. Struleva,&nbsp;S. A. Evlashin,&nbsp;S. I. Ashitkov","doi":"10.3103/S106833562560473X","DOIUrl":"10.3103/S106833562560473X","url":null,"abstract":"<p>Using interference and atomic force microscopy, we investigate ablation properties of nickel nanofilms of varying thickness on silicon substrates after single exposure to 70-fs laser pulses with an intensity of 10<sup>12</sup>–10<sup>13</sup> W/cm<sup>2</sup> in air. Threshold values for the absorbed energy density are determined for rupture within the film and for its separation from the substrate. For samples with thicknesses of 30 and 125 nm, differences in the dependence of crater depth on the energy density of the heating pulses are observed over a wide range of values.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 13","pages":"S1398 - S1405"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579591","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
Anomalous Magnetic Flux Flow in Superconducting Niobium Nitride Films 超导氮化铌薄膜中的异常磁通流
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/S1068335625603826
M. A. Vasyutin, N. D. Kuzmichev, D. A. Shilkin
{"title":"Anomalous Magnetic Flux Flow in Superconducting Niobium Nitride Films","authors":"M. A. Vasyutin,&nbsp;N. D. Kuzmichev,&nbsp;D. A. Shilkin","doi":"10.3103/S1068335625603826","DOIUrl":"10.3103/S1068335625603826","url":null,"abstract":"<p>The current–voltage curves (I–V curves) of superconducting niobium nitride (NbN) films are obtained at temperatures below the superconducting transition temperature (<i>T</i><sub>c</sub>) in a constant magnetic field. Regions of linear I–V curves with differential resistance independent of the magnetic field were observed in the temperature range from 0.7<i>T</i><sub>c</sub> to 0.95<i>T</i><sub>c</sub> for magnetic fields of up to <i>H</i> = 80 kOe. The resistive state of the films in this case is not described by the usual magnetic flux flow. The presence of such I–V curve regions is explained by an additional constant force acting on the vortex lattice. The origin of this force may be associated with collective pinning of the lattice on atomic-scale inhomogeneities, which are always present in niobium nitride, and with strong intervortex interaction. In this case, the movement of a weakly fixed part of the vortex lattice is possible in the environment of strongly pinned vortices near <i>T</i><sub>c</sub> in fields up to 5 kOe .</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 12","pages":"S1231 - S1235"},"PeriodicalIF":0.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579118","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
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
小红书