Tube-number record
18503
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BrandPhilips
ClassGeiger-Müller Radiation Counter Tube
Construction
Primary TypeOther / special
EnvelopeMetal (28% Chromium, 72% Iron)
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage425 V
Audio Performance
Key Features
- Self-quenching
- Halogen-filled
- Gamma and Neutron radiation measurement
- Metal cathode construction
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Geiger-Müller Counter | 300 V | — | 10000000 | — | — |
Application Notes
For measuring thermal neutrons, the counter should be wrapped in a cadmium foil of about 0.5 mm thickness. Mounting requires low capacity (short connections). Keep tube dry and clean to prevent leakage.
Datasheets
Datasheet: 18503.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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