Discharge ionization detector (DID) -- uses an electric spark source to produce helium ions, which in turn ionize the components
Military discharge | Discharge | ionization | Discharge (band) | Low-ionization nuclear emission-line region | Ionization | International Muon Ionization Cooling Experiment | High-intensity discharge lamp | Everhart-Thornley detector | Discharge a committee | discharge | Zeus (particle detector) | Radar Detector | Penning ionization | Particle detector | particle detector | Negative air ionization therapy | Mucopurulent discharge | military discharge | Metal Detector | Metal detector | metal detector | infrared detector | High Resolution Fly's Eye Cosmic Ray Detector | Helium ionization detector | Gas detector | Flame ionization detector | Electrostatic discharge | Electron ionization | Discharge ionization detector |