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Numerical computation of dispersion curves for symmetric and asymmetric modes in an arbitrary cylindrical metal SWS

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4 Author(s)
Haoying Wang ; Nat. Key Lab. of High-Power Radiat., Univ. of Electron. Sci. & Technol. of China, Chengdu, China ; Ziqiang Yang ; Linxin Zhao ; Zheng Liang

A method of quickly and accurately getting the dispersion curves for both symmetric and asymmetric modes in arbitrary slow-wave structures is investigated analytically. A universal dispersion equation is derived by utilizing the field theory and expressing the slow-wave structure's profile in a finite Fourier series. In principle, this method can be applied to arbitrary axisymmetric profiles. As examples, numerical results for three typical slow-wave structures (namely, rippled-wall, disk-loaded, and modified disk-loaded structures) are presented.

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IEEE Transactions on Plasma Science  (Volume:33 ,  Issue: 1 )