the waveguide in most practical applications the waveguide output will include a dielectric window to separate the waveguide from the plasma processing area in which case the magnetized elements may be disposed adjacent this window the elements may be arranged in parallel rows or in concentric rings and with the magnetization preferrably oriented within the elements a continuous resonance surface will be realized across the waveguide opening which in turn may be used for plasma production in accordance with electron cyclotron resonance additionally with the transverse electric field of the energy carried by the waveguide being oriented perpendicular to the central axis of the elements the elements further serve to match waveguide to the output thus facilitating the passage of energy through the elements with minimal reflection mode conversion may advantageously be used to properly orient the electric field of the energy with respect to the elements now making reference to fig2 a and 2b the various embodiments associated with the advantages made possible by the present invention will become more evident in fig2 a for example there is shown a plurality of bar type magnets 210 presumed to be disposed proximate to the output of a waveguide not shown with the transverse component of the microwave electric field.