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2022 Days on Diffraction (DD)最新文献

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Resonance scattering of an extraordinary wave by a smoothed-walled duct with decreased density in a magnetoplasma 磁等离子体中密度降低的光滑壁导管对异常波的共振散射
2022 Days on Diffraction (DD) Pub Date : 2022-05-30 DOI: 10.1109/DD55230.2022.9960961
A. V. Ivoninsky, A. Kudrin, T. Zaboronkova
{"title":"Resonance scattering of an extraordinary wave by a smoothed-walled duct with decreased density in a magnetoplasma","authors":"A. V. Ivoninsky, A. Kudrin, T. Zaboronkova","doi":"10.1109/DD55230.2022.9960961","DOIUrl":"https://doi.org/10.1109/DD55230.2022.9960961","url":null,"abstract":"Scattering of a plane extraordinary wave by a smoothed-walled duct with decreased density in a magnetoplasma is studied. The emphasis is placed on the behavior of the surface and volume plasmon resonances of such a duct and on their comparison with the corresponding resonances of a sharpwalled duct. Analytical and numerical results are given for the scattering and absorption characteristics of a decreased-density duct in the upper hybrid frequency range of a magnetoplasma as functions of the steepness of the density nonuniformity in the duct wall.","PeriodicalId":125852,"journal":{"name":"2022 Days on Diffraction (DD)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127389332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The role of Airy beam parameters in the optical manipulation problems 艾里光束参数在光学操纵问题中的作用
2022 Days on Diffraction (DD) Pub Date : 2022-05-30 DOI: 10.1109/DD55230.2022.9961021
V. Petnikova, V. Makarov
{"title":"The role of Airy beam parameters in the optical manipulation problems","authors":"V. Petnikova, V. Makarov","doi":"10.1109/DD55230.2022.9961021","DOIUrl":"https://doi.org/10.1109/DD55230.2022.9961021","url":null,"abstract":"The Airy beam is of specific interest for optical manipulation due to its diffraction-free propagation in the paraxial approximation. Micro- and nanoparticle trapping is accomplished by forces and angular momentum which are determined by the light beam energy, orbital momentum, spin momentum and angular momentum densities. The dependence of these quantities on such parameters of the Airy beam as its polarization, initial launch angles, and truncation factor are found in the first approximation in the angle of divergence.","PeriodicalId":125852,"journal":{"name":"2022 Days on Diffraction (DD)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134231344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Electrodynamic characteristics of a multigap loop antenna with phased excitation in a magnetoplasma 磁等离子体中相激多隙环形天线的电动力学特性
2022 Days on Diffraction (DD) Pub Date : 2022-05-30 DOI: 10.1109/DD55230.2022.9960980
E. V. Bazhilova, A. Kudrin, T. Zaboronkova, A. S. Zaitseva
{"title":"Electrodynamic characteristics of a multigap loop antenna with phased excitation in a magnetoplasma","authors":"E. V. Bazhilova, A. Kudrin, T. Zaboronkova, A. S. Zaitseva","doi":"10.1109/DD55230.2022.9960980","DOIUrl":"https://doi.org/10.1109/DD55230.2022.9960980","url":null,"abstract":"A study is made of the electrodynamic characteristics of a multigap loop antenna immersed in a homogeneous magnetoplasma. The loop axis is parallel to an external static magnetic field and the antenna current is excited by voltages applied across the feeding gaps of the antenna conductor. Using the integral equation method, the current distribution of such a source is obtained. Based on this solution for the current, it is shown that the antenna driven by appropriately phased voltages is capable of selectively exciting twisted waves with given azimuthal indices in the magnetoplasma.","PeriodicalId":125852,"journal":{"name":"2022 Days on Diffraction (DD)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133213878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wave excitation in laminates by a piezoelectric transducer with intermediate layered acoustic metamaterials with periodic arrays of cracks 带裂纹周期性阵列的中间层状声学超材料压电换能器在层合板中的波激发
2022 Days on Diffraction (DD) Pub Date : 2022-05-30 DOI: 10.1109/DD55230.2022.9960985
M. Golub, O. V. Doroshenko, S. Fomenko, Viktor V. Kozhevnikov, Yanzheng Wang, Chuanzeng Zhang
{"title":"Wave excitation in laminates by a piezoelectric transducer with intermediate layered acoustic metamaterials with periodic arrays of cracks","authors":"M. Golub, O. V. Doroshenko, S. Fomenko, Viktor V. Kozhevnikov, Yanzheng Wang, Chuanzeng Zhang","doi":"10.1109/DD55230.2022.9960985","DOIUrl":"https://doi.org/10.1109/DD55230.2022.9960985","url":null,"abstract":"The application of layered acoustic metamaterials with planar voids or strip-like cracks for wave energy manipulation is investigated. Mathematical and computer models based on the boundary integral equation method and the finite element method are employed for describing dynamic behaviour of the such periodic structures mounted at the surface of elastic plate. The results of numerical analysis of the excitation of elastic waves in substrate are presented in this study.","PeriodicalId":125852,"journal":{"name":"2022 Days on Diffraction (DD)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132560109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 the field of a high-intensity focused ultrasonic beam using the modular nonlinearity model 用模非线性模型计算高强度聚焦超声光束的场
2022 Days on Diffraction (DD) Pub Date : 2022-05-30 DOI: 10.1109/DD55230.2022.9960964
V. A. Gusev
{"title":"Calculation of the field of a high-intensity focused ultrasonic beam using the modular nonlinearity model","authors":"V. A. Gusev","doi":"10.1109/DD55230.2022.9960964","DOIUrl":"https://doi.org/10.1109/DD55230.2022.9960964","url":null,"abstract":"A model of modular nonlinearity is developed for calculating the field of a high-intensity focused bounded acoustic beam. Exact solution of a nonlinear diffraction problem is obtained. The effects of diffraction and nonlinearity on the wave profile of the beam are compared. It is shown that as the characteristic beam width decreases, a sequence of short positive high-amplitude pulses is formed, which was observed experimentally.","PeriodicalId":125852,"journal":{"name":"2022 Days on Diffraction (DD)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116672210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diabolical points and Rayleigh-wave propagation 恶魔点和瑞利波传播
2022 Days on Diffraction (DD) Pub Date : 2022-05-30 DOI: 10.1109/DD55230.2022.9961028
P. Malischewsky
{"title":"Diabolical points and Rayleigh-wave propagation","authors":"P. Malischewsky","doi":"10.1109/DD55230.2022.9961028","DOIUrl":"https://doi.org/10.1109/DD55230.2022.9961028","url":null,"abstract":"Eigenvalue problems with “peculiar properties” were studied in a famous paper by von Neumann and Wigner. The phenomenon of diabolical points is placed into an extended context and is connected for the first time with Rayleigh-wave propagation. The associated appearance of osculation, avoided crossing or repulsion is discussed by using simple models. Everything is connected with everything. Alexander von Humboldt (1769-1859)","PeriodicalId":125852,"journal":{"name":"2022 Days on Diffraction (DD)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132571533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamics and radiation effects for charges propagating in ultraintense laser fields 超强激光场中电荷传播的动力学和辐射效应
2022 Days on Diffraction (DD) Pub Date : 2022-05-30 DOI: 10.1109/DD55230.2022.9960989
V. Zalipaev, V. Shumigai, T. Zalialiutdinov, V. Dubrovich
{"title":"Dynamics and radiation effects for charges propagating in ultraintense laser fields","authors":"V. Zalipaev, V. Shumigai, T. Zalialiutdinov, V. Dubrovich","doi":"10.1109/DD55230.2022.9960989","DOIUrl":"https://doi.org/10.1109/DD55230.2022.9960989","url":null,"abstract":"Dynamics and radiation effects for charges propagating in laser fields described by pulses of electromagnetic plane waves and Gaussian beams are discussed on the basis of classical electrodynamics. The dynamics of the charge motion in the case of pulsed Gaussian beam is evaluated numerically using the corresponding canonical Hamiltonian system with well-known relativistic Hamiltonian of a charge placed in electromagnetic field. The dynamics of electron motion and its spectrum of the radiation intensity obtained for the Gaussian beam incidence are compared with the exact solution data for the case of the incident pulse of the plane electromagnetic wave. We compare these results for the canonical case of propagating pulses with the Gaussian envelope time-dependence.","PeriodicalId":125852,"journal":{"name":"2022 Days on Diffraction (DD)","volume":"180 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123182650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detailed study of the Malyuzhinets-Popov diffraction problem Malyuzhinets-Popov衍射问题的详细研究
2022 Days on Diffraction (DD) Pub Date : 2022-05-30 DOI: 10.1109/DD55230.2022.9961043
E. Zlobina, A. Kiselev
{"title":"Detailed study of the Malyuzhinets-Popov diffraction problem","authors":"E. Zlobina, A. Kiselev","doi":"10.1109/DD55230.2022.9961043","DOIUrl":"https://doi.org/10.1109/DD55230.2022.9961043","url":null,"abstract":"The problem under consideration is the 2D high-frequency diffraction of a plane wave incident along a planar boundary that turns into a smooth convex contour in such a way that the curvature undergoes a jump. Asymptotic analysis based on the classical parabolic-equation method is developed, allowing formulas for the wavefield in the illuminated area, shadow, and the penumbra. The penumbral field is described by means of previously unseen in diffraction theory special functions showing a certain similarity to the Fock's integrals.","PeriodicalId":125852,"journal":{"name":"2022 Days on Diffraction (DD)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129124560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estimates of total bandwidth for magnetic Schrödinger operators on periodic graphs 周期图上磁Schrödinger算子的总带宽估计
2022 Days on Diffraction (DD) Pub Date : 2022-05-30 DOI: 10.1109/DD55230.2022.9961025
E. Korotyaev, N. Saburova
{"title":"Estimates of total bandwidth for magnetic Schrödinger operators on periodic graphs","authors":"E. Korotyaev, N. Saburova","doi":"10.1109/DD55230.2022.9961025","DOIUrl":"https://doi.org/10.1109/DD55230.2022.9961025","url":null,"abstract":"We consider Schrödinger operators with periodic electric and magnetic potentials on periodic discrete graphs. The spectrum of such operators consists of a finite number of bands. We obtain a lower estimate of the total bandwidth for the magnetic Schrödinger operators in terms of geometric parameters of the graph and magnetic fluxes.","PeriodicalId":125852,"journal":{"name":"2022 Days on Diffraction (DD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129932757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Boundary optimal control of radiative-conductive heat transfer with reflection and refraction effects 考虑反射和折射效应的辐射传导传热边界最优控制
2022 Days on Diffraction (DD) Pub Date : 2022-05-30 DOI: 10.1109/DD55230.2022.9961049
N. Park, A. Chebotarev, A. Kovtanyuk
{"title":"Boundary optimal control of radiative-conductive heat transfer with reflection and refraction effects","authors":"N. Park, A. Chebotarev, A. Kovtanyuk","doi":"10.1109/DD55230.2022.9961049","DOIUrl":"https://doi.org/10.1109/DD55230.2022.9961049","url":null,"abstract":"The problem of boundary optimal control for a system of nonlinear elliptic equations simulating radiative heat transfer with Fresnel conjugation conditions on the interfaces of discontinuity of the refractive index is studied. The solvability of the optimal control problem and the non-degeneracy of the optimality conditions are proved.","PeriodicalId":125852,"journal":{"name":"2022 Days on Diffraction (DD)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116413710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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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