Why Cold Cathode Gauges Are Ideal for High Vacuum Ranges
Ionization Mechanism Cold cathode vacuum gauges measure high vacuum through a self-sustaining gas discharge known as the Penning discharge. Unlike hot-cathode ionization gauges that rely on a thermionic filament to emit electrons, cold cathode designs use field emission and crossed electric and magnetic fields to generate and trap electrons. This fundamental difference eliminates filament-related issues […]
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