فهرست مقالات M. Ghorannevis مقاله 1 - The new wave-ring helical (WRH) slow-wave structure for traveling wave tube amplifiers 10.1007/s40094-017-0266-8 Nasser Panahi S. Saviz M. Ghorannevis Journal of Theoretical and Applied Physics , شماره 1 , سال 0 , پاییز 2017