Ionization gauge

Electricity: measuring and testing – Using ionization effects – For monitoring pressure

Reexamination Certificate

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C324S464000

Reexamination Certificate

active

11354278

ABSTRACT:
An ionization gauge for isolating an electron source from gas molecules includes the electron source for generating electrons, a collector electrode for collecting ions formed by the impact between the electrons and gas molecules, and an electron window which isolates the electron source from the gas molecules. The ionization gauge can have an anode which defines an anode volume and decelerates and retains the electrons in a region of the anode. The ionization gauge can have a plurality of electron sources and/or collector electrodes. The collector electrode(s) are be located within the anode volume. The ionization gauge can be a Bayard-Alpert type that measures pressure.

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Author unknown, “Introduction to Bayard-Alpert Style Ionization Gauges,” Granville-Phillips, 1999, XP-002375869, retrieved from the Internet: http://www.helixtechnology.com.cn/pdfs/GP/5—bagauges/Intro—to—BA—Gauges.pdf.
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