E-M WAVE GENERATION USING COLD ELECTRON EMISSION

A device for generating electromagnetic radiation including a cathode and an anode. The output port that is integral with the cathode is an electron emitting sheet of material having a low work function for emitting electrons and for a given thickness has a large transmissivity for transmitting radi...

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Bibliographic Details
Main Author ESPINOSA ROBERT
Format Patent
LanguageEnglish
Published 21.02.2002
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
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Summary:A device for generating electromagnetic radiation including a cathode and an anode. The output port that is integral with the cathode is an electron emitting sheet of material having a low work function for emitting electrons and for a given thickness has a large transmissivity for transmitting radiation. The anode has a target configuration capable of emitting electromagnetic radiation when irradiated by an electron beam. The cathode sheet is supported by a support layer that is selected to be transmissive to the electromagnetic radiation when the cathode sheet must be thin enough to transmit the radiation but is not thick enough to be self supporting. When the support layer is an insulator, electrical connection is made directly to the cathode sheet or to a conducting layer interposed between the cathode sheet and support layer.
Bibliography:Application Number: US19980121716