Title :
High-frequency electromagnetic modes in a dielectric-ring loaded beam tunnel
Author :
Tigelis, Ioannis G. ; Vomvoridis, John L. ; Tzima, Sofia
Author_Institution :
Dept. of Phys., Athens Univ., Greece
fDate :
6/1/1998 12:00:00 AM
Abstract :
A numerical code (PERIODIC-HYBRID) is developed for the calculation of the dispersion relation, the electromagnetic field components, and the quality factor of a dielectrically loaded, periodically corrugated gyrotron beam tunnel. The Floquet theorem is used to express the fields in the vacuum region, and an eigenfunction expansion is employed in each dielectric indentation. The boundary conditions imposed at the interface lead to a linear system of equations, which is appropriately truncated for the numerical implementation. The code has been benchmarked, and the results have been interpreted as the product of coupling between cavity and waveguide modes
Keywords :
circular waveguides; dielectric-loaded waveguides; dispersion relations; eigenvalues and eigenfunctions; gyrotrons; Floquet theorem; PERIODIC-HYBRID code; boundary conditions; cavity modes; dielectric indentation; dielectric-ring loaded beam tunnel; dielectrically loaded periodically corrugated gyrotron beam tunnel; dispersion relation; eigenfunction expansion; electromagnetic field components; high-frequency electromagnetic modes; linear equations; numerical code; numerical implementation; quality factor; vacuum region; waveguide modes; Beams; Boundary conditions; Dielectrics; Dispersion; Eigenvalues and eigenfunctions; Electromagnetic fields; Equations; Gyrotrons; Linear systems; Q factor;
Journal_Title :
Plasma Science, IEEE Transactions on
