Cathode
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United States of America Patent
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Oct 23, 2012
Grant Date -
Mar 18, 2010
app pub date -
Sep 11, 2009
filing date -
Sep 11, 2008
priority date (Note) -
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Abstract
A cathode HAS a cathode head in which a surface emitter is arranged that emits electrons upon application of a heating voltage. The surface emitter is fashioned as a parallel surface emitter with at least two emitter surfaces spaced apart from one another, to which at least one electrically conductive cutoff electrode is fed that is galvanically separated from the parallel surface emitter. Such a cathode has a good cutoff capability.
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