Emitter design including emergency operation mode in case of emitter-damage for medical x-ray application

The invention relates the field of electron emitter of an X-ray tube. More specifically the invention relates to flat thermionic emitters to be used in X-ray systems with variable focus spot size and shape. The emitter provides two main terminals (3, 5) which form current conductors and which suppor...

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Bibliographic Details
Main Authors KAERST JENS PETER, HAUTTMANN STEFAN
Format Patent
LanguageChinese
English
Published 23.11.2011
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
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Summary:The invention relates the field of electron emitter of an X-ray tube. More specifically the invention relates to flat thermionic emitters to be used in X-ray systems with variable focus spot size and shape. The emitter provides two main terminals (3, 5) which form current conductors and which support at least two emitting portions (7, 9). The emitting portions are structured in a way so that theyare electron optical identical or nearly identical increasing the emergency operating options in case of emitter damage.
Bibliography:Application Number: CN200780016748