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Proceedings of the International Conference Days on Diffraction 2013最新文献

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Electromagnetic wave scattering by an array of axially magnetized parallel plasma columns 轴向磁化平行等离子体柱阵列的电磁波散射
Proceedings of the International Conference Days on Diffraction 2013 Pub Date : 2013-05-27 DOI: 10.1109/DD.2013.6712802
V. A. Es'kin, A. Kudrin, T. Zaboronkova, C. Krafft
{"title":"Electromagnetic wave scattering by an array of axially magnetized parallel plasma columns","authors":"V. A. Es'kin, A. Kudrin, T. Zaboronkova, C. Krafft","doi":"10.1109/DD.2013.6712802","DOIUrl":"https://doi.org/10.1109/DD.2013.6712802","url":null,"abstract":"We study scattering of an electromagnetic H-polarized plane wave by an equidistant array of axially magnetized plasma columns located perpendicular to the incidence plane in free space. Conditions are determined under which the individual and collective resonant effects in the considered system lead to the formation of an electromagnetic field with a 2D-periodic structure of chessboard type near the array. The array parameters are found for which a giant enhancement of the scattered field takes place such that the field possesses a quasi-1D layered structure with alternating sharp maxima and deep minima.","PeriodicalId":340014,"journal":{"name":"Proceedings of the International Conference Days on Diffraction 2013","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130593583","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
Ladder operators for Chebyshev-Koornwinder oscillator Chebyshev-Koornwinder振荡器的阶梯算子
Proceedings of the International Conference Days on Diffraction 2013 Pub Date : 2013-05-27 DOI: 10.1109/DD.2013.6712797
V. Borzov, E. Damaskinsky
{"title":"Ladder operators for Chebyshev-Koornwinder oscillator","authors":"V. Borzov, E. Damaskinsky","doi":"10.1109/DD.2013.6712797","DOIUrl":"https://doi.org/10.1109/DD.2013.6712797","url":null,"abstract":"We obtain differential expressions for ladder operators of generalized oscillator related to the bivariate Chebyshev-Koornwinder (CK) polynomials. Using the representation of differential operators of Koornwinder by “number operators” of CK-oscillator, we get a completion of Koornwinder algebra. This extension is an Abelian subalgebra of CK-oscillator algebra.","PeriodicalId":340014,"journal":{"name":"Proceedings of the International Conference Days on Diffraction 2013","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131032326","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
Instability of electromagnetic waves supported by the composite cylinder with dielectric covering 介质覆盖复合圆柱体支撑电磁波的不稳定性
Proceedings of the International Conference Days on Diffraction 2013 Pub Date : 2013-05-27 DOI: 10.1109/DD.2013.6712822
N. F. Yashina, T. Zaboronkova, A. Yashina
{"title":"Instability of electromagnetic waves supported by the composite cylinder with dielectric covering","authors":"N. F. Yashina, T. Zaboronkova, A. Yashina","doi":"10.1109/DD.2013.6712822","DOIUrl":"https://doi.org/10.1109/DD.2013.6712822","url":null,"abstract":"Study of the linear stage of the parametric instability of electromagnetic waves guided by bianisotropic composite cylinder surrounded by uniform dielectric space is made. A three wave interaction can occur if the space-time condition between the external field and the guided waves takes place. The expression of instability increment of guided surface waves is obtained. For the some practically interesting cases numerical analyzes have been performed.","PeriodicalId":340014,"journal":{"name":"Proceedings of the International Conference Days on Diffraction 2013","volume":"1017 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123326568","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
Nonlinear Klein-Fock-Gordon equation and Abelian functions 非线性Klein-Fock-Gordon方程与Abelian函数
Proceedings of the International Conference Days on Diffraction 2013 Pub Date : 2013-05-27 DOI: 10.1109/DD.2013.6712794
E. Aero, A. N. Bulygin, Y. Pavlov
{"title":"Nonlinear Klein-Fock-Gordon equation and Abelian functions","authors":"E. Aero, A. N. Bulygin, Y. Pavlov","doi":"10.1109/DD.2013.6712794","DOIUrl":"https://doi.org/10.1109/DD.2013.6712794","url":null,"abstract":"Functionally invariant solutions of nonlinear Klein-Fock-Gordon equation are obtained. For some cases they are given by inversion of hyperelliptic, in particular, ultraelliptic integrals. For the last the algorithm of the inversion is described and analytical formulas are given. Results are illustrated by computer calculations.","PeriodicalId":340014,"journal":{"name":"Proceedings of the International Conference Days on Diffraction 2013","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129838633","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: 3
Peculiarities of propagation of a plane elastic wave through a gradient layer 平面弹性波在梯度层中的传播特性
Proceedings of the International Conference Days on Diffraction 2013 Pub Date : 2013-05-27 DOI: 10.1109/DD.2013.6712795
A. Anufrieva, D. Tumakov, V. Kipot
{"title":"Peculiarities of propagation of a plane elastic wave through a gradient layer","authors":"A. Anufrieva, D. Tumakov, V. Kipot","doi":"10.1109/DD.2013.6712795","DOIUrl":"https://doi.org/10.1109/DD.2013.6712795","url":null,"abstract":"The problem of diffraction of a plane elastic wave by a gradient in the transverse direction layer is studied. The diffraction problem is reduced to a boundary value problem for the layer. The grid method is used for solving the resulting boundary value problem. Considered is diffraction of a plane longitudinal wave by the layer. The layer is composed of the following materials: plexiglas, steel as well as their linear combinations. Peculiarities of an amplitude-frequency characteristic of density of a normal component of an energy flow of a passed longitudinal wave are studied numerically.","PeriodicalId":340014,"journal":{"name":"Proceedings of the International Conference Days on Diffraction 2013","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115361387","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: 7
Droplet-shape wave produced by line macroscopic current pulse of finite length 有限长度的直线宏观电流脉冲产生的液滴状波
Proceedings of the International Conference Days on Diffraction 2013 Pub Date : 2013-05-27 DOI: 10.1109/DD.2013.6712820
Andrei Borissovitch Utkin
{"title":"Droplet-shape wave produced by line macroscopic current pulse of finite length","authors":"Andrei Borissovitch Utkin","doi":"10.1109/DD.2013.6712820","DOIUrl":"https://doi.org/10.1109/DD.2013.6712820","url":null,"abstract":"A physically tenable generic model of launching localized droplet-shape waves is proposed. All eventual concretizations of this model are based on a line pulsed source whose front propagates faster than its wave along a finite segment. For such class of models, the general spacetime structure of the emanated pulsed wave is found and investigated using the Riemann-Volterra technique enhanced by the method of spacetime triangle diagrams.","PeriodicalId":340014,"journal":{"name":"Proceedings of the International Conference Days on Diffraction 2013","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128004790","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: 2
Permittivity determination of thin multi-sectional diaphragms in a rectangular waveguide 矩形波导中薄多截面隔膜的介电常数测定
Proceedings of the International Conference Days on Diffraction 2013 Pub Date : 2013-05-27 DOI: 10.1109/DD.2013.6712799
E. Derevyanchuk, Y. Smirnov, Y. Shestopalov
{"title":"Permittivity determination of thin multi-sectional diaphragms in a rectangular waveguide","authors":"E. Derevyanchuk, Y. Smirnov, Y. Shestopalov","doi":"10.1109/DD.2013.6712799","DOIUrl":"https://doi.org/10.1109/DD.2013.6712799","url":null,"abstract":"In this paper we consider the inverse problem of the permittivity determination of thin multisectional diaphragm in a rectangular waveguide. We perform a detailed analysis for one-, two- and three-sectional thin diaphragms. Numerical results are presented.","PeriodicalId":340014,"journal":{"name":"Proceedings of the International Conference Days on Diffraction 2013","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128517653","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
Oscillations in classical boundary layer for flow with double-deck boundary layers structure 双层边界层结构流动的经典边界层振动
Proceedings of the International Conference Days on Diffraction 2013 Pub Date : 2013-05-27 DOI: 10.1109/DD.2013.6712798
V. Danilov, R. Gaydukov
{"title":"Oscillations in classical boundary layer for flow with double-deck boundary layers structure","authors":"V. Danilov, R. Gaydukov","doi":"10.1109/DD.2013.6712798","DOIUrl":"https://doi.org/10.1109/DD.2013.6712798","url":null,"abstract":"We consider flow past a flat plate with small periodic irregularities for large Reynolds number. This flow has double-deck boundary layer structure. For oscillations in classical boundary layer we obtained the time-dependent Rayleigh-type equation with some boundary condition. We prove the existence and uniqueness of the stationary solution for the obtained problem and also the property of its stability.","PeriodicalId":340014,"journal":{"name":"Proceedings of the International Conference Days on Diffraction 2013","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130716298","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: 2
Near field influence on Green's function retrieval in seismic interferometry (wave equation case) 近场对地震干涉测量格林函数反演的影响(波动方程情况)
Proceedings of the International Conference Days on Diffraction 2013 Pub Date : 2013-05-27 DOI: 10.1109/DD.2013.6712823
P. Znak, B. Kashtan
{"title":"Near field influence on Green's function retrieval in seismic interferometry (wave equation case)","authors":"P. Znak, B. Kashtan","doi":"10.1109/DD.2013.6712823","DOIUrl":"https://doi.org/10.1109/DD.2013.6712823","url":null,"abstract":"The virtual source method is used to reduce responses of conventional seismic experiment to the needed for observation horizon. Normally such speculations are based on approximation of the exact integral representation for an imaginary (or real) part of Green's function in high frequency regime and far field. We emphasize that high frequency approach already contains an error due to sources-receivers closeness and acts as the far field approach at the same time. In this paper the accuracy of the standard approach is examined.","PeriodicalId":340014,"journal":{"name":"Proceedings of the International Conference Days on Diffraction 2013","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116074917","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
Weight functions based on the convolutions of atomic functions 基于原子函数的卷积的权重函数
Proceedings of the International Conference Days on Diffraction 2013 Pub Date : 2013-05-27 DOI: 10.1109/DD.2013.6712807
Y. Konovalov, V. Kravchenko
{"title":"Weight functions based on the convolutions of atomic functions","authors":"Y. Konovalov, V. Kravchenko","doi":"10.1109/DD.2013.6712807","DOIUrl":"https://doi.org/10.1109/DD.2013.6712807","url":null,"abstract":"In the report new weight functions with low side-lobe level, based on convolutions of atomic functions are presented. There are effective algorithms for their computation. To increase coherent gain the window is truncated with an additional one. This approach allows us to obtain windows with good properties. The degree of cut of the function determines the relation between side-lobes and coherent gain. Usually the best windows are obtained with the cut near the effective support of function.","PeriodicalId":340014,"journal":{"name":"Proceedings of the International Conference Days on Diffraction 2013","volume":"117 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129373746","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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