Numerical study of the dispersion characteristics of a semi-circularly corrugated slow wave structureMd. Ghulam Saber, Rakibul Hasan Sagor and Md. Ruhul AminEur. Phys. J. D, 69 2 (2015) 38DOI: https://doi.org/10.1140/epjd/e2014-50798-5