ID:
270
Maker's Name:
Philips
Where made:
Holland
Dimensions:
1.6 × 1.6 × 4.8 cm
A voltage of around 1000 Volts is applied between a coaxial rod and the case.
The passage of a beta or gamma ray through the end Mica window causes the gas to conduct and produce an electrical pulse. The discharge is self-quenching.
Geiger tubes count emissions only. They do not measure the energy of the source.
