The Mullard ZP1481 Geiger-Muller Tube is a halogen quenched metal tube with a thin end window. It is used for detecting alpha; beta and gamma radiation and is recommended as a general purpose tube for use with radioactive sources in schools. A removable protective mesh cap of plastic is fitted over the window and the body has a thin plastic coating.
Features:
- Sensitive to alpha; beta and gamma radiation
- Threshold voltage: max. 400V
- Plateau length: min. 100V
- Recommended supply voltage: 450V
- Operating temperature: -40 to +75°C
- Dead time (at 450V): 11µs
- Anode/cathode capacity: 3.5pF
- Sensitivity for 1mR/L radium: 1650 counts min-1
- Window thickness: 2.5 - 3.0 mg cm-2
- Dimensions overall: 76mm x 26mm diameter
- Life expectancy at approx. 25°C: 5x10¹° counts
This Geiger-Muller tube must be used with the Geiger-Muller Tube Holder which is sold separately (B8H27155).