Radiant energy – Ion generation – Field ionization type
Patent
1979-02-13
1981-11-17
Lewis, Michael L.
Radiant energy
Ion generation
Field ionization type
313345, 428607, 428620, 428664, 428672, H01J 2700
Patent
active
043013694
ABSTRACT:
A semiconductor ion emitter for a mass spectrometer, comprises an electrode having semiconductor whiskers provided on the conductive surface of a base. A process for manufacturing such semiconductor ion emitter, includes steps of evaporating gold onto a wire having a diameter of about 60 .mu.m, preheating the coated wire, and supplying a gas containing the semiconductor for growth of the whiskers on the gold plated wire. An apparatus for such process comprises a vacuum vessel for enclosing the wire, means for controllably heating the wire and means for controllably supplying a gas containing the semiconductor into the vacuum vessel.
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Katakuse Itsuo
Matsuda Hisashi
Matsuo Takekiyo
Adams Bruce L.
Burns Robert E.
Lewis Michael L.
Lobato Emmanuel J.
The President of Osaka University
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