Tube-number record
18504
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BrandPHILIPS
ClassRadiation Counter Tube
Construction
Primary TypeOther / special
EnvelopeMetal with mica window
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage425 V
Audio Performance
Key Features
- Self quenching
- Mica window
- Halogen quenching agent
- Detects Alpha, Beta, Gamma, and Neutron radiation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Geiger-Müller Counting | 300 V | — | — | — | — |
Application Notes
For measuring thermal neutrons, the tube should be wrapped in cadmium foil (~0.5 mm thickness). Keep dry and clean to prevent leakage currents. Mounting requires low-capacity connections.
Datasheets
Datasheet: 18504.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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