{"title":"磁等离子体中圆柱形不规则体对异常平面波的共振散射和吸收","authors":"A. V. Ivoninsky, A. V. Kudrin, N. V. Shchapina","doi":"10.1007/s11141-025-10394-3","DOIUrl":null,"url":null,"abstract":"<p>We study resonance scattering of an extraordinary plane electromagnetic wave by a cylindrical magnetic-field-aligned decreased-density irregularity located in a background magnetoplasma. The emphasis is placed on the influence of smoothing the boundary of such an irregularity on the characteristics of its surface and volume plasmon resonances in comparison with the case of a stepwise plasma density profile. The frequency dependences of the amplitude coefficients of the electromagnetic field and the effective scattering and absorption cross sections (per unit length of the cylindrical irregularity) are obtained for different values of the width of the nonuniform region and its radius. A qualitative change in the behavior of the scattering and absorption cross sections is demonstrated, which is caused by energy dissipation at the upper hybrid resonance of the weakly collisional plasma inside the cylindrical irregularity with a monotonic profile of the plasma density, as compared to the case of a similar sharp-walled irregularity.</p>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"67 7","pages":"518 - 535"},"PeriodicalIF":0.7000,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Resonance Scattering and Absorption of an Extraordinary Plane Wave by a Cylindrical Irregularity in a Magnetoplasma\",\"authors\":\"A. V. Ivoninsky, A. V. Kudrin, N. V. Shchapina\",\"doi\":\"10.1007/s11141-025-10394-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>We study resonance scattering of an extraordinary plane electromagnetic wave by a cylindrical magnetic-field-aligned decreased-density irregularity located in a background magnetoplasma. The emphasis is placed on the influence of smoothing the boundary of such an irregularity on the characteristics of its surface and volume plasmon resonances in comparison with the case of a stepwise plasma density profile. The frequency dependences of the amplitude coefficients of the electromagnetic field and the effective scattering and absorption cross sections (per unit length of the cylindrical irregularity) are obtained for different values of the width of the nonuniform region and its radius. A qualitative change in the behavior of the scattering and absorption cross sections is demonstrated, which is caused by energy dissipation at the upper hybrid resonance of the weakly collisional plasma inside the cylindrical irregularity with a monotonic profile of the plasma density, as compared to the case of a similar sharp-walled irregularity.</p>\",\"PeriodicalId\":748,\"journal\":{\"name\":\"Radiophysics and Quantum Electronics\",\"volume\":\"67 7\",\"pages\":\"518 - 535\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2025-07-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiophysics and Quantum Electronics\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11141-025-10394-3\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiophysics and Quantum Electronics","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s11141-025-10394-3","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Resonance Scattering and Absorption of an Extraordinary Plane Wave by a Cylindrical Irregularity in a Magnetoplasma
We study resonance scattering of an extraordinary plane electromagnetic wave by a cylindrical magnetic-field-aligned decreased-density irregularity located in a background magnetoplasma. The emphasis is placed on the influence of smoothing the boundary of such an irregularity on the characteristics of its surface and volume plasmon resonances in comparison with the case of a stepwise plasma density profile. The frequency dependences of the amplitude coefficients of the electromagnetic field and the effective scattering and absorption cross sections (per unit length of the cylindrical irregularity) are obtained for different values of the width of the nonuniform region and its radius. A qualitative change in the behavior of the scattering and absorption cross sections is demonstrated, which is caused by energy dissipation at the upper hybrid resonance of the weakly collisional plasma inside the cylindrical irregularity with a monotonic profile of the plasma density, as compared to the case of a similar sharp-walled irregularity.
期刊介绍：
Radiophysics and Quantum Electronics contains the most recent and best Russian research on topics such as:
Radio astronomy;
Plasma astrophysics;
Ionospheric, atmospheric and oceanic physics;
Radiowave propagation;
Quantum radiophysics;
Pphysics of oscillations and waves;
Physics of plasmas;
Statistical radiophysics;
Electrodynamics;
Vacuum and plasma electronics;
Acoustics;
Solid-state electronics.
Radiophysics and Quantum Electronics is a translation of the Russian journal Izvestiya VUZ. Radiofizika, published by the Radiophysical Research Institute and N.I. Lobachevsky State University at Nizhnii Novgorod, Russia. The Russian volume-year is published in English beginning in April.
All articles are peer-reviewed.
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