Evaluation of time domain electromagnetic fields radiated by constant velocity moving particles traveling along an arbitrarily shaped cross-section waveguide using frequency domain Green's functions

被引：1

作者：

Jimenez Nogales, M. ^{[1
]}

Marini, S. ^{[2
]}

Gimeno Martinez, B. ^{[3
]}

Alvarez Melcon, A. ^{[1
]}

Quesada Pereira, F. D. ^{[1
]}

Boria Esbert, V. E. ^{[4
]}

Soto, P. ^{[4
]}

Cogollos, S. ^{[4
]}

Raboso, D. ^{[5
]}

机构：

[1] Tech Univ Cartagena, Informat & Signal Theory Dept, ES-30202 Cartagena, Spain

[2] Univ Alicante, Ingn Sistemas & Teoria Senal, Dept Fis, San Vicente Del Raspeig, Spain

[3] Univ Valencia, Appl Phys Dept ICMUV, Valencia, Spain

[4] Univ Politecn Valencia, Commun Dept iTEAM, Valencia, Spain

[5] European Space Agcy, European Space Res & Technol Ctr, NL-2200 AG Noordwijk, Netherlands

来源：

RADIO SCIENCE | 2012年 / 47卷

关键词：

WAKE FIELDS; COUPLING IMPEDANCE; MODAL-ANALYSIS; BEAM; CAVITY;

D O I：

10.1029/2012RS005008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A technique for the accurate computation of the time domain electromagnetic fields radiated by a charged distribution traveling along an arbitrarily shaped waveguide region is presented. Based on the transformation (by means of the standard Fourier analysis) of the time-varying current density of the analyzed problem to the frequency domain, the resulting equivalent current is further convolved with the dyadic electric and magnetic Green's functions. Moreover, we show that only the evaluation of the transverse magnetic modes of the structure is required for the calculation of fields radiated by particles traveling in the axial direction. Finally, frequency domain electric and magnetic fields are transformed back to the time domain, just obtaining the total fields radiated by the charged distribution. Furthermore, we present a method for the computation of the wakefields of arbitrary cross-section uniform waveguides from the resulting field expressions. Several examples of charged particles moving in the axial direction of such waveguides are included.

引用

页数：14