| 摘要 |
<p>The present invention pertains to an electron gun that generates an electron flow to produce r.f. energy therefrom. The electron gun (10) comprises an electrostatic cavity (12) having a first stage (14) with emitting faces (16) and multiple stages with emitting sections (18). The electron gun (10) also includes an electrostatic force generating mechanism (15) which encompasses the emitting faces (16) and the multiple emitting sections (18) such that electrons directed from the emitting faces (16) contact the emitting sections (18) so that additional electrons are emitted therefrom. Moreover, a method of producing electrons using this invention is described.</p> |
