Radiophysics and Quantum Electronics最新文献_第8页

Longitudinal Waves in Structurally Inhomogeneous Viscoelastic Solids with a Quadratic–Bimodular Nonlinearity Decreasing with Increasing Frequency 具有随频率增加而减小的二次双模非线性的结构非均质粘弹性固体中的纵波

IF 0.8 4区地球科学

Radiophysics and Quantum Electronics Pub Date : 2024-02-08 DOI: 10.1007/s11141-024-10291-1

V. E. Nazarov, S. B. Kiyashko

引用次数: 0

Interference of the Electric and Envelope Areas of Ultrashort Light Pulses in Quantum Systems 量子系统中超短光脉冲的电场和包络区的干扰

IF 0.8 4区地球科学

Radiophysics and Quantum Electronics Pub Date : 2024-02-08 DOI: 10.1007/s11141-024-10295-x

R. M. Arkhipov, M. V. Arkhipov, A. V.Pakhomov, O. O. Diachkova, N. N. Rosanov

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引用次数: 0

Scattering of an Electromagnetic Wave by a Thin Perfectly Conducting Cylinder Located Inside a Dielectric Body 位于介电体内的薄型完全导电圆柱体对电磁波的散射

IF 0.8 4区地球科学

Radiophysics and Quantum Electronics Pub Date : 2024-02-08 DOI: 10.1007/s11141-024-10292-0

A. G. Dmitrenko, O. M. Balashova

引用次数: 0

Single-Resonant Parametric Oscillator for Photons Compatible with Solid-State Quantum Memories 与固态量子存储器兼容的光子单谐振参量振荡器

IF 0.8 4区地球科学

Radiophysics and Quantum Electronics Pub Date : 2024-02-08 DOI: 10.1007/s11141-024-10293-z

D. A. Turaykhanov, A. O. Akat’ev, É. I. Ikhsanova, I. Z. Latypov, A. V. Shkalikov, A. A. Kalachev

引用次数: 0

Noise Direction Finding of Acoustic Sources by Using Microphone Antenna Arrays in the Presence of Intense Interference 在强烈干扰下使用麦克风天线阵列查找声源的噪声方向

IF 0.8 4区地球科学

Radiophysics and Quantum Electronics Pub Date : 2024-02-08 DOI: 10.1007/s11141-024-10289-9

A. A. Rodionov, V. Yu. Semenov

引用次数: 0

The Wave Mechanism of “Fast Breakdown” in Compact Intracloud Discharges 紧凑型云内放电中的 "快速击穿 "波机制

IF 0.8 4区地球科学

Radiophysics and Quantum Electronics Pub Date : 2024-02-07 DOI: 10.1007/s11141-024-10288-w

I. M. Kutsyk, L. P. Babich, E. I. Bochkov

{"title":"The Wave Mechanism of “Fast Breakdown” in Compact Intracloud Discharges","authors":"I. M. Kutsyk, L. P. Babich, E. I. Bochkov","doi":"10.1007/s11141-024-10288-w","DOIUrl":"10.1007/s11141-024-10288-w","url":null,"abstract":"We propose a wave mechanism for explaining “fast breakdown” in thunderstorm clouds and the generation of powerful pulses of electromagnetic radiation of very high frequencies (VHF, from 30 to 300 MHz). A polarization wave moves along the discharge gap; an area of increased electric field is formed at the wave front, inducing the transition of corona micro-discharges into streamers. The mechanism does not require an electron-initiating source to start streamers, as in the case of direct avalanche-streamer transitions. It is assumed that the concentration of corona micro-discharges before the front is much greater than that of the streamers, since the threshold number of lengths of the electron avalanche growth for the ignition of the corona discharge is much smaller than that to start the streamer. The mechanism makes it possible to reduce the field strength necessary to initiate micro-discharges before the wave front. The wave is a self-consistent process of the birth of streamers, polarization of the medium, and the motion of the amplified-field area. It is a macroscopic analog of the ionization wave in a streamer: the elementary acts of ionization of molecules correspond to the emerging of streamers, such that the wave velocity ismuch greater than the speed of moving particles. For this reason, to denote a wave of fast breakdown, we introduce the term “streamerization,” which briefly and accurately reveals the essence of the process. The emerging streamers are sources of radio-frequency radiation. Calculations have shown the possibility of the front traveling at a speed of fast breakdown.","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"66 4","pages":"214 - 226"},"PeriodicalIF":0.8,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139756014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interference of the Electric and Envelope Areas of Ultrashort Light Pulses in Quantum Systems 量子系统中超短光脉冲的电场和包络区的干扰

IF 0.8 4区地球科学

Radiophysics and Quantum Electronics Pub Date : 2024-02-07 DOI: 10.1007/s11141-024-10287-x

R. M. Arkhipov, M. V. Arkhipov, A. V.Pakhomov, O. O. Diachkova, N. N. Rosanov

{"title":"Interference of the Electric and Envelope Areas of Ultrashort Light Pulses in Quantum Systems","authors":"R. M. Arkhipov, M. V. Arkhipov, A. V.Pakhomov, O. O. Diachkova, N. N. Rosanov","doi":"10.1007/s11141-024-10287-x","DOIUrl":"https://doi.org/10.1007/s11141-024-10287-x","url":null,"abstract":"In recent years, significant progress has been made in generating ultrashort electromagnetic pulses of single-cycle and subcycle duration. Unipolar pulses contain one half-cycle of the field and have a nonzero electric area. The conventional concepts of interaction of electromagnetic radiation with matter (in particular, interference) used in the case of multicycle pulses are not applicable to unipolar ones. This minireview discusses the latest results on the effects of extremely short low-amplitude pulses (when the perturbation theory is valid) on resonant media and individual quantum systems (atoms, molecules, and nanostructures) from the viewpoint of the recently introduced concept of “interference” of the areas of short light pulses (electric and envelope areas). We provide a simple relation showing that in order to compare the effects of multicycle bipolar and subcycle unipolar pulses on micro-objects, one should compare their areas, not energies. By numerically solving the Maxwell–Bloch equations, we study the features of area interference are studied beyond the limits of perturbation theory. It is shown that, after the collision of a pair of π-like ultrashort pulses, polarization structures and population difference gratings with non-harmonic multipeak structures are formed inside the medium. The possibility of experimentally determining the electric area of unipolar pulses through interference of their areas is discussed for the first time.","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"17 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139756074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","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 an Improved-Accuracy Monopulse Phase Direction Finder Based on an Adaptive Antenna Array 基于自适应天线阵列的更精确单脉冲相位寻向器的仿真分析

IF 0.8 4区地球科学

Radiophysics and Quantum Electronics Pub Date : 2024-02-07 DOI: 10.1007/s11141-024-10290-2

A. C. Popov, V. F. Pimenov

引用次数: 0

Topological Scalar and Vector Laser Solitons 拓扑标量和矢量激光孤子

IF 0.8 4区地球科学

Radiophysics and Quantum Electronics Pub Date : 2023-12-19 DOI: 10.1007/s11141-023-10285-5

N. A. Veretenov, N. N. Rosanov, S. V. Fedorov

引用次数: 0

Nonlinear Dynamics of Slipping Flows 滑动流的非线性动力学

IF 0.8 4区地球科学

Radiophysics and Quantum Electronics Pub Date : 2023-12-19 DOI: 10.1007/s11141-023-10281-9

E. A. Kuznetsov, E. A. Mikhailov, M. G. Serdyukov

{"title":"Nonlinear Dynamics of Slipping Flows","authors":"E. A. Kuznetsov, E. A. Mikhailov, M. G. Serdyukov","doi":"10.1007/s11141-023-10281-9","DOIUrl":"10.1007/s11141-023-10281-9","url":null,"abstract":"We develop a new concept for the formation of behavior features of inviscid incompressible fluids on the rigid boundary due to breaking of slipping flows. The breaking possibility is related to the compressibility of such flows due to the boundary. For two- and three-dimensional inviscid Prandtl equations, we analytically obtain the criteria for a gradient catastrophe for slipping flows. For the two-dimensional Prandtl equations, breaking occurs for both the velocity component parallel to the boundary and the vorticity gradient. The explosive growth of the vorticity gradient correlates with the appearance of a jet in the direction perpendicular to the boundary. For the three-dimensional Prandtl flows, breaking (fold formation) leads to an explosive growth for both the symmetric part of the velocity-gradient tensor and its antisymmetric part, i.e., vorticity. The blow-up generation of vorticity is possible due to the fluid suction from the slipping flow with simultaneous formation of a jet perpendicular to the boundary. These factors can be considered as a tornado-formation mechanism. Within the framework of the two-dimensional Euler equations, we numerically study the problem of the formation of increasing velocity gradients for the flows between two parallel plates. It is revealed that on the rigid boundary, the maximum velocity gradient exponentially increases with time simultaneously with an increase in the vorticity gradient according to the double exponential law. This process is also accompanied by a jet formation in the direction perpendicular to the boundary.","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"66 2-3","pages":"129 - 142"},"PeriodicalIF":0.8,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138742313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0