<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ioannidis, Z. C.</style></author><author><style face="normal" font="default" size="100%">Dumbrajs, O.</style></author><author><style face="normal" font="default" size="100%">Tigelis, I. G.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Eigenvalues and Ohmic Losses in Coaxial Gyrotron Cavity</style></title><secondary-title><style face="normal" font="default" size="100%">Plasma Science, IEEE Transactions on</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">coaxial cavity</style></keyword><keyword><style  face="normal" font="default" size="100%">Coaxial components</style></keyword><keyword><style  face="normal" font="default" size="100%">coaxial gyrotron</style></keyword><keyword><style  face="normal" font="default" size="100%">coaxial gyrotron cavity</style></keyword><keyword><style  face="normal" font="default" size="100%">coaxial waveguides</style></keyword><keyword><style  face="normal" font="default" size="100%">Corrugated surfaces</style></keyword><keyword><style  face="normal" font="default" size="100%">dispersion relation</style></keyword><keyword><style  face="normal" font="default" size="100%">eigenfunction expansion</style></keyword><keyword><style  face="normal" font="default" size="100%">eigenvalues</style></keyword><keyword><style  face="normal" font="default" size="100%">Eigenvalues and eigenfunctions</style></keyword><keyword><style  face="normal" font="default" size="100%">field distributions</style></keyword><keyword><style  face="normal" font="default" size="100%">Frequency</style></keyword><keyword><style  face="normal" font="default" size="100%">gyrotrons</style></keyword><keyword><style  face="normal" font="default" size="100%">harmonics</style></keyword><keyword><style  face="normal" font="default" size="100%">infinite coaxial waveguide</style></keyword><keyword><style  face="normal" font="default" size="100%">longitudinally corrugated insert</style></keyword><keyword><style  face="normal" font="default" size="100%">losses</style></keyword><keyword><style  face="normal" font="default" size="100%">mathematical analysis</style></keyword><keyword><style  face="normal" font="default" size="100%">ohmic losses</style></keyword><keyword><style  face="normal" font="default" size="100%">p modes</style></keyword><keyword><style  face="normal" font="default" size="100%">physics</style></keyword><keyword><style  face="normal" font="default" size="100%">Q factor</style></keyword><keyword><style  face="normal" font="default" size="100%">spatial harmonics</style></keyword><keyword><style  face="normal" font="default" size="100%">Surface impedance</style></keyword><keyword><style  face="normal" font="default" size="100%">Surface waves</style></keyword><keyword><style  face="normal" font="default" size="100%">tapered cavity geometries</style></keyword><keyword><style  face="normal" font="default" size="100%">TEm</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year></dates><number><style face="normal" font="default" size="100%">4</style></number><volume><style face="normal" font="default" size="100%">34</style></volume><pages><style face="normal" font="default" size="100%">1516-1522</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The authors present the mathematical analysis for the calculation of the dispersion relation, the field distributions, and the ohmic losses for TEm,p modes in an infinite coaxial waveguide with a longitudinally corrugated insert. The method employed is based on an appropriate eigenfunction expansion, and its main advantage is the very fast convergence with a few spatial harmonics. The analysis is properly extended to include tapered cavities with varying, in respect to the z-coordinate, outer and/or inner radius. Numerical results are presented for several tapered cavity geometries and compared with already published methods</style></abstract></record></records></xml>