Electronic Valve - Philips, Geiger-Muller Tube, Type 18505, 1955-1979 Object Reg. No: ST 027868

Radiation counter tube with a thin mica window at one end. Intended for detection of beta and gamma radiation.
A Geiger-Muller tube is a gas filled cold cathode diode. It is operated at a voltage just below the breakdown voltage so that any ionising particle will trigger breakdown which is detected and extinguished by the attached electronic circuitry.
Manufacturer: Philips, Holland
Metal cylinder open at one end with a loose cover. Remnants of widow are visible. The other end has exhaust tip and a wire pin connected to electrode inside.
Acquisition Information:
Purchase & Subsequent Transfer from Science Museum of Victoria (SMV), 1971
Discipline: Technology
Dimensions: 54 mm (Length), 27 mm (Diameter)

More information

Tagged with: geiger muller tubes, physical apparatus instruments, thermionic electron valves
Themes this item is part of: Science & Measurement Collection
Primary Classification: PHYSICAL SCIENCES
Secondary Classification: Atomic & Nuclear Physics
Tertiary Classification: radiation measuring equipment
Inscriptions: Philips/18505/MADE IN HOLLAND
Manufacturer: Philips, Holland, 1955-1979

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