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Introduction to Bayard-Alpert Ionization Gauges

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Introduction to Bayard-Alpert Ionization Gauges

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This technical note discusses the different types of Bayard-Alpert (B-A) gauges, basics of operation, components of a B-A gauge, and degassing techniques. A Bayard-Alpert vacuum gauge ionizes the gas molecules within the gauge volume, collects those ions on a thin ion collector wire, and measures the resulting current to the ion collector to determine the number of molecules present and indicates a pressure based on that measurement.

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